Micorwaving the jizz in the condom, and when you're finished you smack your partner in the face with it just hard enough to make it break.. causing scorching of the face.
A hot tub steamer is when you take a ninja poop in a hot tub without someone knowing it, and then make up an excuse to leave. Preferably a nice, solid duce. Also, it helps when the jets are on to create a bubble shroud to conceal your misdeeds.
I left a very large Hot Tub Steamer in Becky's hot tub at that big party she had Friday night. No one noticed for 10 minutes. Everyone there, including Becky, were suspect.