The act of slapping ones friend across the face with a hand that recently resided upon your sack and taint. Best performed after a night of dancing and drinking. Caution, execution of a successful fast ball will require a retreat with due haste as the recipient of the fast ball WILL retaliate with extreme violence. Best executed whilst already running from your victim.
Person 1: I can't believe you fast balled Eddie! Didn't you remember he's our ride home?
Person 2: iJust keep running/i
Person 2: iJust keep running/i
by Jamazz January 30, 2004
Fast. Lightning fast. The fastest thing hanging off of the fastest thing on four legs. Created by The Oatmeal web comic under the Winter 2010 State of the Web.
by ScurvyJake January 25, 2011
by RiasBloodRose February 20, 2016