I Know Nothing At All

Took a trip, I got tripped up. Took a slip, I slipped too much. Took a guess but I guessed wrong. Made a mess and now I'm gone.
When I know, I know. When I don't, I stall. Well you know I know nothing at all.
Took a day then took some more. What'd I waste them for? Took a guess but I guessed wrong. Made a mess and now I'm gone.
When I know, I know. When I don't, I stall. Well you know I know nothing at all.