a good idea.

derived from classic cartoons when the characters have a lightbulb appear above their head when they have an idea.
Guy #1: "I'm bored"
Guy #2: "Let's go paintballing!"
Guy #1: "Good bulbs man!"
by lettuce guy December 23, 2009
To become sexually aroused as to become fully erect.
Zach leaned over to Tyler and said, “Bruh do you see that guy over there? I’m trying to hide it but I’m totally bulbing right now.”
by Your boy Mark August 14, 2022
Is a person who is an absolute dimwit.Used in Liverpool,UK.Can be used when they are also useless in most every day scenarios.
I told you before that he is an absolute bulb, so stay away from him.
by MichaelK June 24, 2006
General term for well meaning but unreliable person, often intelligent but prone to lapses in concentration and brain function.
I see Andy is late getting to the pub again?
I doubt he'll show up, you know what a bulb he is.
by Dr Boswell November 8, 2004
n. A light bulb, although usually used for lamps and such, can be used to smoke meth.
"Hey are you passin' that bulb around? Can I get a hit?"
by Holly-Day February 3, 2004
A small, 1 serve cannister of Nitrous Oxide used for getting a kinda fun, but quite pathetic 5 minute high.
Possibly puts bubbles in your brain.
"Keen for a bulb?"
"Let's go do some bulbs."
by Diego August 14, 2003
The head of a circumsized erect penis if of greater girth than the shaft.
Look at the bulb on that dude! It twice the circumference of his cock!
by dicklicker May 23, 2003