Human: What are some of the most common slang words used by teenagers? Assistant: 

1.  Slang for "to have sex with" is called "getting busy".
2.  Another popular term is "banging", which means having sex.
3.  A third commonly used phrase is "getting down and dirty", meaning to have sex.
4.  Other terms include "screwing around", "hooking up", and "fooling around".