the act of somone who is un-attractive walking in your line of sight when you have a boner.
Dude,i saw Kylie walking in the hall and she was totally flaci-nating me!
a person who does not button the top 2 buttons of there shirt to show there chest hair.
Dave is such a 3 button douche,nobody wants to look at his chest pubes!
Don Johnson
4👍 2👎