When someone turns you on but that's as for as it will go.

Lamp is another term or codeword for "head", "dome", and "blowjob" only true lamp lovers use this term. The definition of this word originated in the moutains of stormville.

an appliance turned on and off to brighten a room

A type of sarcasm used in any situation. Often said by teens to say that something didn’t happen or did happen by saying the opposite event and saying lamp after it.

to be lamped is when it is your turn to host a party

you house is the lamp, therefore everybody else is a moth

why the fuck are you looking up the definition of lamp, you actual dumb fuck. I bet you're actually brain-dead in real life. go fuck yourself

a male or female friend who is reliable or just a great person in general (often used as a form of address).
"they'd never choose a him/her over their bros"

Also used as a term for someone who has been frienzoned
ie. A friendship exists between two people, one of whom has an unreciprocated romantic or sexual interest in the other.
"What the HELL is the friend zone? When a girl decides that you're no longer a dating option. You become this complete nonsexual entity in her eyes, like her brother or a LAMP"