A "High Five" is defined as a gesture of greeting, good-fellowship, or triumph in which one person slaps the upraised palm of the hand against that of another.  It's also a good opportunity to creep out your co-workers.

I'm not sure why but I love uncomfortable situations.   The more awkward the better.   If you're like me I'd like to suggest the "high-five hold"   It's one of my favorite gags....