the negative character trait can be anything from wearing something stupid, to being way overconfident, to being a jerk.
Variations include: toolbag, toolbox, toolbelt
Me: That guy looks like a tool. Check out his douchebag-status uggs and pink v.
(speaking about a friend who ditched me for the 'popular gang')
Me: Wow, John is such a tool. He think he's so popular and badass.
(speaking about a fellow peer who hit his girlfriend during a fight)
Me: Wtf, Joe freakin' hit his girlfriend today! I hereby declare he is a huge tool.
"Tool is our friend. We call him that because he is one."
People who listen to Avril Lavigne, are tools.
People who think Sum 41 is a punk band, are all tools.
best music ever. period.
<TOOL fan> listening to TOOL.