need background info:

1. could you kick his ass in hand to hand?
2. could you kick his ass with a bayonet/bigass knife/machette/katana?


if you are not big enough for a direct physical assault, a tactic of sabotage should do it. (cut his fuel line or unscrew the tire nuts when you know your mom won't be driving with him, he will end up in a flaming wreck, or a mangled wreck eventually)