end-of-semester snowball phenomenon 

The tendency for hw, projects, tests, etc. to occur with disproportionate frequency in the final weeks of a semester.

You thought high school was tough, wait 'til you experience the end-of-semester snowball phenomenon in college.

end-of-semester snowball phenomenon by 4eggSAMple April 15, 2009

Aberdeen Snowball 

The act of your Blowing a load into your girlfriend or wife's mouth during oral sex. Then the girlfriend or wife transfers the load to the asshole that was hitting on her all night at the party, The very asshole that also managed to pass out at yours or her house. Completion of the Aberdeen Snowball is when said victim and Asshole is told in the morning what happened.

"Mike was hitting on Lacey last night, so after he passed out she helped me give him an Aberdeen Snowball. "

"There's nothing better than informing someone that they received an Aberdeen Snowball last night!"

Aberdeen Snowball by Scuba Steve 2-146th June 28, 2012

louisiana snowball 

Having someone give you a blowjob with Hot Sauce in their mouth and then spitting the ejaculate in your face.

My girlfriend just gave me a Louisiana Snowball and my face is on fire.

louisiana snowball by Irish71 May 27, 2014

baltimore snowball

It's when one person stands on a balcony and ejaculates over the side while another person on the ground catches it either on the face or directly in their mouth.

I gave my landlord the Baltimore Snowball because she raised my rent $25.

baltimore snowball by Gabby Hayes February 5, 2014

Columbia River Snowball 

An act of revenge that begins with shitting in a river and packing the pile like a snowball. Once the proper shape and consistency is achieved it can be hurled at the culprit.

Pat was tired of putting up with Rays taunts so he gave him a Columbia River Snowball.

Columbia River Snowball by Thud Pickles March 30, 2009

Chinese Snowball 

Exactly what you think it is, a compacted ball of rice used as a projectile.

Dude you missed it at lunch today! Fu Chow Meng got pelted in the face by a Chinese snowball; it wouldn't have been as funny if he didn't enjoy it so much.

Chinese Snowball by Butternutz77 September 27, 2010

blue snowball 

A blue snowball is when you freeze your penis then cum making snow.

Today i gave myself a Blue Snowball and it felt great.

blue snowball by Mc Amnesia January 23, 2014