Misc: what was the name of genghis khan?

Questions

Van Halen, The Pointer Sisters, and Kriss Kross all have songs by this name:?

"And the interior smells real bad 'cause my friend puked in the back".?

"I feel almost as bad as I did/When you were still here".?

"Robert DeNiro's mole/Has gotta be 10 feet wide".?

"Seen each Star Trek 80 Times/Memorized each word".?