McLight

Any flashlight used by a McDonald's employee to search for items.

I lost my McLight while searching for the Chicken McNuggets.

McLighting

Similar to gaslighting. When you order McDonalds and someone says they don't want any; but asks for a bite when the order arrives and your halfway through that well needed juicy ass burger.

John: Hey I'm gonna order some McDonalds, you want anything?
Annika: Nah I'm not hungry, I dont even eat that shit anyway.
**20 Minutes Later**
John: Goddamn this burger is fat and juicy!
Sarah: Ooh, can I have a bite!
John: No way, stop McLighting me, you had your chance!