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Sly Hallacy 

The act of attempting to slyly hide an acquired erection in a place of public persons.
"Although Bret tries to cover it up, we know he's got a Sly Hallacy."
Sly Hallacy by SlyDawg69 May 16, 2010
Related Words

hallacan 

the sexiest, coolest, funniest, mutual on tik tok ever. they’re super awesome and very good looking :]. 100% recommend being mutuals or friends with them.
“oh is that hallacan, they’re so cool
hallacan by the creator of slirt August 22, 2021

hallacan 

hallacan is a really awesome tiktoker who is very cool british . we stan hallacan . very handsome .
person one: “look! it’s hallacan !”
person two: “omg is that the cool british tiktoker !?”
hallacan by 0nlybrooke August 22, 2021

hallacan 

hallacan aka the best but worst mutual on the planet 😍
"did you know tiktok user hallacan has a piss kink????"
"yea."
hallacan by kallCUM August 23, 2021
Short for hallucinating. Seeing objects or hearing things that ceise to exist
A: last night was crazy dawg.
B: what happened last night?
A: Ty and i was fucking hallucy man.
hallucy by valleywalley August 18, 2013

hallacalla 

gold tissue paper used as a condom in foreign countries
When I was in India I bought some cheap, but nice, hallacallas.
hallacalla by Tom Burguneon January 11, 2008