If during oral sex you ejaculate into you partner's mouth and they spit the cum onto your chin.
I totally gave him the Cumming of Gandalf the White! That's what he gets for cumming in my mouth!
by Crotch Club December 30, 2007
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Gandalf High-five

A Gandalf High-five is an awesome type of high-five which is reserved to only those who have met Sir Ian Mckellen.
Jason: eeeeeeh, I met Ian Mckellen.
Michael: Gandalf High-five!!!!!

*HIGH FIVE takes place*
by corbane December 08, 2010
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The gandalf

Sex act in which the male is pulled around by his beard while blocking her passage.
by Sbmetalhead August 08, 2018
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Small Gandalf

Wimpy ass fucking bitch. 1 cm cock. No bitches. Gets no head either. He do got a big ass tho
“Yo Small Gandalf is such a pussy I swear

I know right!”
by KonoDioDa_ April 24, 2022
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Big dick Gandalf

A sexier Gandalf or a way to refer to a sexy male (regardless of your gender)
Yo obi wan (revenge of the sith) obi wan is a big dick Gandalf
by Female jacculant sex bot October 12, 2020
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Gandalfing

The art of talking out of your arse and lying about every single thing. It is also the art of heavily breathing down a microphone regardless of how many times someone asks you to stop.
Someone says - "My grandad blew away in a tent"

One is to respond with - "that is bullshit. You are gandalfing"
by ThunderFox69 December 17, 2017
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