Surely SUPERMODEL is more apt, as in Naomi Campbell

Of course. Thank you.

Let's get the, erm, ball rolling again with another, probably easy, smutty one shall we?

Masturbate, fondling ball, getting excited to climax, as it were (2,2,5)

I haven't been able to solve the Blob 'loose woman' one above - perhaps someone can finish the job? There's also a rather dull clue unsolved which I posted a while back.
and as for rab's ... SO TO SPEAK - 'Masturbate' = TOSS - 'fondling ball' = O - 'getting excited' [anagrammed] ending with PEAK = 'climax'. Definition = as it were. Well, you get the jist. Nice and sleazy. More clues please.

Chalky] I went round and round in circles with your clue, all that I could come up with was * ASTUTENESS from astute being almost acute but no idea about the "expulsion" part.