Context: a boxer has a lot of female fans that worship him because of his handsomeness. They call him 王子. His trainer is a pervert who likes to receive anal sex from women with sex toys. In an extra scene at the hand of the manga, the boxer and his trainer meets a female fan that hands him a lipstick and a paper sheet saying:
The boxer rubs the lipstick on his lips and kisses the paper sheet. Then he says:
After this, the trainer takes the lipstick and asks:
1) What is the meaning of メスブタ and オスブタ in this context? I know they are the female and male of the pig, but do they have a metaphorical meaning here?
2) What is the め after メスブタ and オスブタ?
3) What is the meaning of 欲しがりなブタ? How does ブタ as a suffix work?
4) Why is it じゃあない and not じゃない in the second sentence?
Here's the original page. Thank you for your help!
I found here this definition of メスブタ:
But still, why does she call herself メスブタ？