True story...I wore this shirt to a restaurant, and as I sat down at my table an old guy said to me "excuse me son, but i gotta ask you about the shirt.  Hot Beef Injection?  What is that all about?"  Realizing he's old and uncool, I merely say "It's slang". 

 

He replies with a "Slang for what?!?!" I try to think of the most politically correct answer and reply...

 

"coitus." 

 

The old codger frowns and says "this is a family restaurant!"

 

Indeed, and my funny t-shirt has done its job :)