A Vulcan 

A person with a distinctively Vulcan style haircut, who also happens to have serious personality issues.

I met that guy before, he was very cold and unfriendly.

Looked kind of like a Vulcan.

A Vulcan by Ordersomepizza July 31, 2010

Bulli a vulcan day 

A day where people wholesomely bully (bulli is used instead of bully specifically for this day) a people named vulcan by calling them either cute adorable or any other version to instead shyness in them.

Hey did you guys hear its bulli a vulcan day you guys got yer compliments ready?

Bulli a vulcan day by Oblivioncorp November 10, 2020

toothpick into a volcano 

when a guy with a really small penis does a really loose girl.

guy one - have you ever thrown a toothpick into a volcano?
guy two - why yes, i did just last night.

toothpick into a volcano by seagullxx November 1, 2007

and then a volcano erupted 

After someone tells a boring or mundane story, or a joke that nobody laughs at, conclude it by explaining that a volcano erupted afterwards

Olivia: I was doing my washing up when the sink overflowed and my feet got wet.
Mike: And then a volcano erupted.

Eric: Why did the chicken cross the road?
Alex: Why?
Eric: Because there was no traffic coming.
Alex: And then a volcano erupted.

and then a volcano erupted by ManfredPang July 3, 2011

[toothpick down a volcano] 

the toothpick represents the penis and the volcano represents the large well used gaping vagina.

"Bangin' that ho was like dropping a toothpick down a volcano.I had to strap a board across my ass to keep from falling in!"

[toothpick down a volcano] by the doll August 15, 2006

When in Rome, don't wash your dick or a volcano may erupt and kill you. 

A common saying

Austin: you know what they say, "When in Rome, don't wash your dick or a volcano may erupt and kill you."

Jacob: Yea man, totally, that is what they say.

When in Rome, don't wash your dick or a volcano may erupt and kill you. by Dr.Write March 25, 2020

dance on a volcano 

Basically riding a cock to orgasm. Best if "Dance On A Volcano" by Genesis playing in background. Self-explanatory.

I tried the Dance On A Volcano last night with my gf. I'm single now.

dance on a volcano by GraffAhem August 4, 2018