I think this image says it all:
Now, some people might drop in some lyrics from any one of several songs that deal with “heat.” You might say “it’s getting hot in here/so take off all your clothes” or maybe “the heat is on, on the street” (depending on how old you are). Me, I’m too much of a geek, so I just say “Yaaooouch! Seafood soup!” (Thanks to Zany Video Game Quotes for the link.)