A blow job. Shake with the hand(s) and suck with the mouth like a vacuum would.
"She gave me a shake and vac on the first night, so me knew she was the one."
~Ali G talking about his girlfriend, Julie
by Phazia September 17, 2008
Get the shake and vac mug.
VAC stands for Valve Anti-Cheat, an automated system designed to detect cheats installed on users' computers.
A:I got a vac ban yesterday

B:Ahh shit man, gonna miss playing CS:GO with you.
by YT: IgnasMX November 15, 2016
Get the vac ban mug.
A thing, situation, or person that both sucks and blows (i.e., REALLY sucks). Named after the shop-vac vacuum cleaner, which can be set to either draw air in or push it out.
"I hate my job, my boss is a total shop-vac."

"You had to eat tofu hotdogs because she's a vegan? What a shop-vac!"
by Jackee C. June 19, 2008
Get the shop-vac mug.
When a dirty, talented tramp stuffs you're entire package (balls and all) into her mouth, and blows you with amazing suction power.
I found a nice shop vac last night.
by Womanizer August 31, 2003
Get the Shop Vac mug.
A powerful vacuum used to clean up large messes
Kiersten : Wow Jake you really came A lot last night good thing we have that Shop Vac in the garage.
Jake : Uh yeah I did cum a lot last night but we didn't use a Shop Vac to clean it up!
Kiersten : Oh Yeah that was Monday night when Matthew came over!
Jake : WHAT!
Kiersten : Oh he's the cute salesman from Sears that sold me the Shop Vac he offered to show me how it worked!
Jake : GOD DAMN'T DID YOU CHEAT ON ME AGAIN?
Kiersten : No silly Matthew sucked his cum out of me with the Shop Vac GEE Jake don't have a cow!
Jake : Your pathetic you know that!
Steve : Hey guys check out the Shop Vac that cute guy from Sears sold me it can suck the cum right out of my dick! Uh! Uh! Uh! Uh! Oh Jesus Christ! and it can suck Matthew's cum right out of my ass Uh! Uh! Uh! Uh! Oh Jesus Christ!
Kiersten : And you think im pathetic?
Jake : Yeah you and Steve deserve each other!
Steve : Hey Kiersten wanna come over to my place tonight and play with my Shop Vac? (Wink)
Kiersten : Oh go fuck your Shop Vac!
by SlopNChop September 26, 2018
Get the Shop Vac mug.
The female version of the "teabag". Dropping one's vagina onto your vanquished opponent's face in a teabagging motion, creating suction and humiliation for the receiver.
"Don't make me pussy-vac your face!"

"Dude, it was epic. She beat him up then pussy-vaced his face!"
by spiff225 April 24, 2010
Get the pussy-vac mug.
when a guy is screwing his partner from behind, and he pulls out and ejaculates all over her back and licks it up... yup, with his tongue.
i totally back vaced that hot bitch last night
by theshizzit January 31, 2006
Get the back vac mug.