Top Definition
When a girl takes drugs, sits in the dark and comes up with "bright" ideas.
Lucy and Gemma popped a Valium each and were lightbulbing until they fell asleep.
by PersianP October 21, 2010

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It is universally accepted truism that being a "Light Bulb" is the Asian equivalent of being a Third Wheel.

Light Bulbing is the verb form.
Mana: "This Korean BBQ is delicious!"

Danielle: "I know! I'm so glad we came here. We come here so often we're practically a married couple...oh, I forgot David was here. You're not part of our married couple, sorry!"
David: *busy light bulbing away*
by UniversallyAccepted! January 21, 2012

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