I would like to augment the already-good answers from the other members by add the following: There is considerable play on words here - the double-entendre. See the following explanations. 1. The first "stuck up you" means psychological blockage, unhappiness or frustration. 2. The "get it out" is the extended metaphor from "stuck", and it means "that you can't get rid of or resolve". 3. The second "stuck up me" refers both to sexual penetration and to psychological frustration. The "it isn't you" means you are not giving me that sex or that penetration, because you are not enough of a man. "How like a man" is a sarcasm to rub it in, insulting him for his lack of manhood or manly attributes. Gillian is right. Why are you reading this? Which book is it?

The phrase isn't 'stuck up' here, it's simply 'stuck'. If something is 'stuck' (in, up, down etc) somewhere it means that it is lodged there firmly and you can't get it out. 'Apt' (which you could easily have looked up in a dictionary) means 'appropriate'.

Which book is this?

Absolutely. A very good point, Gillian. This looks like unsuitable reading for so many reasons.

I wonder if there may be something better for you to read to learn English, this doesn't sound very nice :) All the best Gillian