Sam:  What is a suck-up?

Katie:  Someone who tells you nice things just to get you to do things for them.

Sam:  What is a buzz-kill?

Me:  Someone who sucks the fun out of everything.  A person who always ruins the fun that others are having.

Sam:  What is an egomaniac?

Katie:  Someone who thinks they are better than everyone else and who lets everyone know that.

Me:  Where did you hear these words?

Sam: From my mind.