Isthmus

Combined words: This and must

After finding a $20 he said aloud "Isthmus be my lucky day"

by cdrbillg April 6, 2009

ISTT

I speak the truth.

Sometimes written as, 'ISTTN' (I speak the truth, Nigger!)

Guy one: Ashlyn has a nice ass.

Guy two: That's my girlfriend, bitch.

Guy one: Calm down man! ISTT.

by I'm Amy May 9, 2011

ITSTHEANGELGUY

The best CS:GO Movement Player And Bhopper and of course amazing CS:GO Cheater, really good at lying to fans, scamming people, and having such a big EGO. Really cool yes?

he does grow really fast on YouTube and TikTok but those numbers wont hide the fact that you cheat in your videos, the only good thing you made is the song that's it!!!

"ITSTHEANGELGUY" stands for: don't cheat and play legit, scamming lying wont get you anywhere. L :)

by Frogerza September 3, 2021

Freundlich isotherm

Dirty oral sex for engineers.

A: I saw our professor at the bar friday night; he was in the corner, inflicting a Freundlich isotherm on a student.

B: That's gonna burn for awhile.

by SexInEngineering November 28, 2011

Isthaque

A freshie guy who thinks he can get with anybody

"Man he's such an Isthaque"

by I'm a dude in an alley May 6, 2014

Isthmagog

A supposedly mythical creature who lives in the in-between; a creature of neither light nor dark. The Isthmagog exists where shadow and light and object meet.

On a twilight walk I caught a fleeting glimpse of an Isthmagog, it moved between light and dark and objects-edge as though they were one.

by O-Ball October 27, 2014

Isthar

A very funny and goofy woman. An Isthar is always happy and cheerful, ready to make sure you have a grin or smile on your face. Isthar's are jumpy, which is why they are good runners and athletic. They tend to be optimistic and in a good mood. Do not anger an Isthar, they can make you regret it.

“Isthar always tells the funniest jokes!”

by starsonyoureyes September 17, 2017