[Raak's one first:] Somebody saw somebody, fetching somebody.
[Blue Bananas' one:] The silent Marx brother has turned himself into a plant and draped himself all over the place.

Taking another from BB's list, Rhamnus purshiani cortex

Goat's head is a persian delicacy.

Eleutherococcus senticosus anyone?

The elusive 'sleeping beauty'.

Tre monete in una fontana.

Thirty coins, one currency. (Official motto of the European Monetary Union.)

Non serviam

Yam's off.

If you make me cry, I'll take you to court.

de minimis non curat lex.

It's so small the vicar can't read it.

Nu este bine sã fie omul singur.

Now is the bin-end of our Omani sangria.

Non placet

Where's the soap?

supercalifragilisticexpialidocious