1.To fix or create anything with something totaly outragoues and unrelated.
2. To virtualy have no job and have crazy dangerous adventures.
Guy 1: dude my car broke down on the highway.....
Guy 2: what did you do?
Guy 1: I mcguyverd that bitch with shoe string and glue.
Guy 2: *tear* Mcguyver would be proud.... if he was real.....
Exaggerated: Just because you can take a pocketknife, a toothpick and a lighter and make a John Deere tractor doesn't make you McGuyver