Red lobster 

Basically when a girl is on her period and they're having sex with with someone

Sticking a dick in a bloody vagina is a red lobster

Red lobster by RedLobster November 20, 2016

Lobster

A fellow from another region of the world who has come to visit another area to 'Relax and Enjoy The Sun', yet has an inability to use the decent amount of sunscreen, often turning their skin into a reddish hue.

"That Lobster stayed too long in the sun"

Lobster by Lunexor July 4, 2008

lobster

a person who says they are going to do something, but just screws them over in the end. ( lobster, lob, lobbed)

Wow, youre such a lobster
Wow, you lobbed again last night

lobster by lobster101 November 8, 2009

lobster-claw

the female equivalent of teabagging.

she knocked me down, and dropped her pants. i was thinking "oh yeah", but then she straight sat on my forehead and lobster-clawed me.

lobster-claw by The Jello Fetus February 7, 2012

Lobstering 

Something our sleep-deprived Tubbo said in a Ranboo stream

Tubbo: I'm gonna start withholding lobstering from you

Ranboo: What does that even mean???

Lobstering by Yuri_loves_pens June 22, 2021

Irish lobster  

When a girl peirces her vigina directly in the middle and has 2 male partners place the penis in each side of the piercing and both ejaculate at the same time and if the girl gets pregnant, the male who is the father loses.

My baby boy Billy was born form Irish Lobster as a teen

Irish lobster by obese4lyfe June 26, 2008

lobsterhole 

A dangerous hazard in the Porter Meadow at University of California, Santa Cruz. It should be minded at all costs. Heed the warning. Mind the Lobsterhole.

Watch out, Kip! Mind the Lobsterhole!

lobsterhole by Dennis keen December 1, 2006