ICB

As the name implies, an ICB is an unexpected boner that pops up during class. This can easily happen when sleeping or daydreaming in class. The ICB is most annoying when it happens right before the class ends.

I fell asleep during lecture today and woke up with an ICB, so I performed a belt tuck to hide it when class ended.

by segrio420 July 15, 2009

ICBS

I Call BullShit

ICBS!! No way she wants a guy that only lasts 5 minutes. She’s only saying that to get more OnlyFans Subs.

by Blandpoe April 17, 2022

ICB

An “ICB” or “Ice Cold Beer” is a term to describe a chilled alcoholic beverage. The term doesn’t technically refer to beer specifically but describes the wide variety of cold alcoholic beverages.

Hey Carson can you go grab me an ICB from the cooler?

Or

Brayden loves a good ICB.

by Crack Daddy Parmesan May 20, 2024

ICB

Short for "Im Currently Busting" (yes in that specific capitalization and punctuation).

Def got so hard, he literally said ICB in front of the whole crowd.

by kirkyicb September 28, 2025

ICBS

"I call bullshit"

When you call bullshit but you dot want everyone to know yet

ICBS Trump

by Brenda Barbara January 7, 2018