When I'm mad at someone, I use the cheapest method for revenge.
A really bad habit of mine is that whenever I wash my hands and I can't find a towel, I use the loathed person's clothes to dry it.
Just now, I washed my hands and feet after eating some tangerines and wiped it on UB's clean, dry shirt. HA-HA-HA.
I used to do that to my dad when I was in J.B.
I'm such an evil leprechaun.