Doing everything and anything to give an epileptic person a severe epilepsy in retaliation for whatever they do to you.
Jennifer: So then then Thor kills Thanos and-
Trish: *Flicks light switch on and off, flashes phone camera repeatedly, and plays a high pitch tone* Eat shit and get Lightswitched, Jennifer! Thats what you get for spoiling Endgame for me!
A rave thrown by rhymatically flickering the lightswitch. Not recommended as lightswitches were designed for turning lights ON and OFF. The Cheat received capital punishment for such crimes.
"Don't turn on the light, don't turn on the light!" Any female who appears attractive at the end of the night, but whose true form is revealed by proper lighting.
Yeah so Gina, right. She was slammin' at the club, right. Then i brings her home and was takin' her to town, right. Then Tommy bursts in the room and turns on the light, right. He's all like, bro-man, that bitch is a lightswitch gremlin!