A person on RuneScape who kills chickens for no apparent reason.
"Dude, your a Chickie Killer. What did chickens ever do to you?"
A weenis fight can be between 2 or more people. It's pretty much like tag, except you tap the person's weenis, and then they try to tag you back.
Person 1: "WEENIS FIGHT" -tags friend's weenis-
Person 2: "Hey! Get back here" -chases after friend-