The act of being in a relationship that you know you shouldn't be in any more where you keep breaking up and getting back together. Usually caused by genuine affection or friendship combined with fantastic sex. An on again/off again romance.
Sara: "What are you doing Friday?"
Rachel: "Justin."
Sara: "You're STILL dating him?"
Rachel: "Yeah, well, no, not really, I don't know, kind of. We've been lightbulbing it for about a year now. Haven't found anyone better and, damn, I love that cock."
by hotgrrl May 24, 2005
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Word used to describe an inbred child that has a massive forehead.
That Drew kid is so creepy with his massive forehead.
It looks like a 'lightbulb'.
by Drew is an inbred child November 8, 2010
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To be a "third wheel" in a situation where only a couple should be together. Think of the single lightbulb in an interrogation room.
I wish Monica wouldn't be such a damn lightbulb... I want some quality time with my boo.
by Ayu September 26, 2004
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had a revelation; realized the truth/gospel/whatever; saw the light; noticed... etc.
John was struggling with his english homework when he lightbulbed on a hidden symbol.
by epeca May 21, 2009
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An object put into a socket to project light into a room. Lightbulbs require electricity to work.
That Lightbulb is bright
by I see I make definition February 14, 2018
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When you shove a lightbulb up your arse because 5 minute crafts said your poo could light it
Doctor: why is there a light bulb up your ass
Person: i was lightbulbing
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Using a ghetto vaporizer made from a light bulb.
So did you ever end up making "The Machine" for your DMT?

No. I was never able to drill through a mini liquor bottle without breaking it, so I'm still stuck with plain old lightbulbization.
by dankoni May 30, 2009
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