A speed runner is a person who normally can beat a game at a very fast time, and because of it become big headed sometimes and think they are the shit, and become a dick head.
Flippy: hey do you speed runner of the Super Mario 64
Paracusia: Ya dick head i can beat the game faster than you can get a girl
The competitive sport of trying to get the quickest time between meeting a girl for the first time and fingering her. Many "bros" compete with their "bros" to get the quickest time. Many times "bros" will be on a mission to speed finger before they meet the girl to get a quicker time.
Me and my bros went out to go speed fingering. I got a girl in 47 minutes and my homie did it in only 15 minutes!