The boys are in two minds, even being in the KFC - to do or not to do: https://www.urbandictionary.com/define.php?term=tap%20that%20ass https://www.urbandictionary.com/define.php?term=double%20bagging

To be clear - That's really, really, really vulgar language. It's disrespectful to the girl. It's disrespectful to women in general. It is disrespectful to anyone who overheard them. It is rude. It is crass. Do not repeat this at all. If someone says it to or around you - that person is a jerk. Avoid them. But basically, the first is asking whether the second one finds the girl attractive (in a very crude way). The second is answering (again, in a very, very, very rude way) that he does not. And then he just randomly insults the girl on top of that.

It is slang, please find the meaning at: http://onlineslangdictionary.com/meaning-definition-of/tap-that-ass Double bagged = wearing two condoms at the same time to (supposedly) reduce the risk of pregnancy or infections. KFC stands for: Kentucky Fried Chicken