Spenny-ing (v) : This is the act of being stupid and/or performing stupid actions.
Dude 1 : Lets go to that party, you said you'd go with me.
Dude 2 : I can't, it's friday so i'm going to grandma's house.
Dude 1: Stop Spenny-ing me.
Dude 3 : He just spenny-ed you.