The finger Gamers use to fire a weapon when playing video games (usually the index finger) such as call of duty, kill zone, battlefield bad company, etc.
Dude, my freaking triggerfinger is hurting; I shouldn’t had played for more than 4 straight hours.
When a male or female places their trigger finger (right to the thumb) in a place of dark desire, otherwise known as the anus!
girl: where are your hands slipping?
guy: you know where!
girl: you're gonna do it aren't you Louie Bannister?
guy: do what girlfriend?
girl: give me the trigger finger!
guy: yes babycakes
girl: awww, baby that feels good, but mumma had a very heavy lunch.........