A person whose arrogant, abrasive attitude sets them so far below everyone else that once they are a toolbag, they never recover or let go of that title put on them.
when someone presents themselves in a very stupid manner. they also tend to be called a spanner-head and often have a slight twitch in the right eye- Refer to Hardwick.
jack: man i was hitting on this girl at the bar last night, super fly.... but when she said she liked Lil' wayne's rock album... I knew she was a toolbag.
-or-
jack: man those bitches on the hills are nothin' but tool magnet ...bitches.
floyd: yeah they're basically a sold out shelf of designer toolbags.
A Completely Useless Person.
-This goes far beyond being a so called "tool"...at a least a tool, the object itself, can be useful. Whereas a Toolbag is completely Useless apart from Holding 'tools' Itself.
-Kind of like designing a shovel that would stand up by itself,...instead of a person standing there "holding the shovel up" and watching the other person working.