If you pick your nose any more, you'll strike oil.

Come on, you could drive a bus up here! My father, urging me to climb up a steep hill behind him.

If you do that again I'll make you smile on the other side of your face. My mother's favourite preparation for a sharp slap.

Der landschaft ist mit schnee bedeckt! My mother, whenever it snows overnight. She claims it's the only thing she remembers from one year of German lessons at school (in about 1948)

In response to a burp:
Pardon me for being rude
It was not me, it was my food
It just popped up to say hello
And now it's gone back down below.

Don't make me come in there...

Aye, and when tha's finished peeling potaytoes, tha can peel t' bloody peel. For some reason my Welsh father always delivered that one in a Yorkshire accent

Another lovely day!
Another one of my mum's, after a woman she knew who had moved to India, in the 1960s, with her husband who had been posted there with work. After about 6 weeks in India, the servants opened the shutters one morning and she declared the astonished line above. Hence my mum uses it whenever there is a spell of 3 or 4 days of blue sky in a row.

You're just like your mother! My father, to my brother, subtly implying that cfm was more like himself, of course.

Laughing leads to crying. My late mum in law's favourite.

It's all coming back to me now, as the boy scout said when the wind changed.

Oi! Cloth-ears!

Worse things happen at sea.

Sneeze of the truth.

Better out than in.

There's enough blue sky to make a pair of trousers for a sailor. A very optimistic view of a tiny break in the cloud cover (generally during family holidays in North Wales)

It's all a matter of taste, as the man said when he kissed the cow. A favorite of my father's. I later discovered that it can be found in Don Quixote.

It's cold enough for a fur-lined walking stick. My late dad's winter comment.

It'll all end in sick and tears. One of Mrs INJ's favourites, but originally from her mother - generally about a film or TV programme.

......s! I've shot 'em (one of my father's when he came across any particularly shoddy piece of work or poor service; as in 'Cooks! I've shot 'em'.

You won't die! (mother, in response to a variety of mild childhood traumas). OK so far.

I'll go and jump in the clock! - apparently a favourite from my late paternal grandmother, and, no, my Dad doesn't know what she was getting at either

... and one for aunt Aggie. My mother adding spoons of tea to the pot, though I don't remember any aunt with that name.

Pull my finger!   Thanks Dad!

Quis!, my dad would should with his hands behind his back. The first son (of 3) to shout "Ego!" would get the treat - chocolate, sweets etc.

Keep that. Come in 'andy even if you never use it. (Work colleague/technician/jack of all trades).

Arsenal!
my dad, whenever anyone sneezed, in tribute to Eric 'n' Ernie

What a der-brain! (Sung to the tune of the Hallelujah chorus)
My dad again, prior to contemporary theories on raisinf kids' self-esteem

[Projoy] Well if we're bringing out child abuse, I used to get called "You silly, twisted boy" (a Grytpype-Thynne line, I believe) by my dad, and my mum's go-to threat to make me behave was "I'll bash your face in", which I've discovered works on my own children (the empty threat, that is) :-)

Only boring people get bored Still wonder about the veracity of that one .. I have been known to say it to my own daughters

Sowing plums to catch medlars, which I haven't heard myself, but I've heard of it being used as a reply to "What are you doing, mummy?"

(Projoy) At work in the early '70s it was the Caprolactam Chorus.

C F F T B Short for 'Chock full fit to bust' after a particularly large meal.

[INJ] Or in my family, fair boakin' fu'.

Penolopy jolly This means bottom, backside, arse, bum, derrière etc. and is derived from the Welsh pen ðl (same meaning) and the fact that my mother had had a friend at school called Penelope Jolly. The jolly was optional and sometimes Mum used simply the Welsh term on its own. Thus; "Oh, did you hurt your penolopy?" We had a number of these Welsh-derived words at home. This one was in frequent use but is untransferable, you could say.
(INJ) In our family it was just the last three letters, which my mother would half-heartedly claim meant "Full to the brim". Such a lady!