My psych teacher was talking about sarcasm. he told this story about how his wife (who is also a teacher) challenges the students to come up with an example of sarcasm where there isn't a victim, or someone who is hurt by it. Link (my teacher) said his favorite example someone came up with was this girl who said she jokes with her boyfriend on the way to the bedroom, "are you ready to have sex for 2 minutes?" which, no one argued was actually a good thing for her to say.
"no, I'm just trying to relieve tension, make light of it..." -That girl.

 I'm pretty sarcastic sometimes, so I'm trying to think of who I'm victimizing.