fastball 

The act of cupping a fart in your hand and then throwing it at someone.

Here's a fastball coming atcha!

fastball by Isaiah Groshong January 24, 2008

fastball 

where u slap your balls on to your partners face until they bleed

My friend gave my mom a fastball.

fastball by cclark March 15, 2007

Fastball 

A 90's indie rock band formed in 1995 in austin texas. The band skyrocketed to fame on the gossamer wings of their hit single."the way"a very compelling song about an elderly couple who attend a rural Texas festival called pioneer days. And due to their collective dementia.never return and their car is eventually found at the bottom of a ravine near hot springs arkansas. Hence.the pliant refrain: "where were they going.without ever knowing the way!"

I knew the guys from "fastball"when they worked at a deli in austin.

Fastball by 4realazitgits March 18, 2021

fastball special 

A popular superhero tag-team maneuver, where one throws a partner at a target. The person throwing usually has superhuman strength. It is also known as a Maneuver Seven.
For example:

"I'm going to Fastball Special you into a fucking wall."

Colossus and Wolverine.

"I'm going to Fastball Special you into a fucking wall."

fastball special by dingledangus April 19, 2015

Fastball Slammer 

When playing the game "Cup Hawk" you yell "Fastball Slammer" then throw the ball as hard as you can at the cup. Usually ends with drilling the guy standing behind the cup.

Aaron - "You know what, FASTBALL SLAMMER!"

Coleman - "Wow dude ok.. that hurt what the heck"

Aaron - "YOLO"

Fastball Slammer by CupChamp July 24, 2012

The Four Seam Fastball 

The act of using four of one's fingers to administer a handjob. The hand is not in the normal jacking off position, but rather the giver of the handjob comes from above and wraps all four fingers around the penis of the recipient. The position and movement of the fingers looks somewhat simliar to the movement of a jellyfish's tentacles, a lobster's claws, or how you would hold a baseball when pitching a four seam fastball. Invented by Elise, made popular by Muffin and Wills.

Elise gave Jack the four seam fastball, and Jack had to correct and show her the real way to do it.

The Four Seam Fastball by Jeff aka Muffin October 8, 2006

Jellyfish Fastball 

This move is done after engaging in doggystyle secks. The man ejaculates into the woman's vagina. He then holds his hand like a cup underneath the semen (Jellyfish) filled vagina. With his other hand he grabs the woman's side and begins to tickle her. If done correctly it will cause a muscle contraction that forces the semen from the vagina into the cupped hand. When the woman turns to look back to see what is going on, that is when the male siezes the opportunity and hits her right in between the eyes with a Jellyfish Fastball.

That bitch was so pissed when I hit her with a sidearm Jellyfish Fastball!

Jellyfish Fastball by Hoostin10 September 20, 2011