1 definition by M T Hammer
A sex move move where the male ejaculates on the lamp shade of his sexual partner, with or without their knowledge. Henceforth, every time they turn on the lamp, the 'bat signal' will be projected on to a wall or ceiling.
I did The Bat Signal at this girls house last night. Because I'm the hero she deserves, but not the one she needs right now. So she can hunt me whenever she turns on a lamp. Because I can take it. Because I'm not a hero. I'm a silent guardian, a watchful protector. The dark knight.
by M T Hammer June 9, 2018