1 definition by interwebmanx99

STFUL

acronym that stands for "Shut the fuck up, loser."

Sometimes pronounced like "stuff-fool"

<ineedfriends0132> my life sux, y won't u guys be nice to me ur so mean plz be my friend :(
<coolguyx1035> STFUL
<ineedfriends0132> :(
* ineedfriends0132 has left the channel

by interwebmanx99 June 6, 2004