1. Drinking oneself to death. Likely to have a disastrously damaging effect on oneself or ones interest.
2. Water skiing fatal accident.
3. Clearing a bridge on a motorcycle when you back tire falls off.
4. Rebellious without no care or sympathy
5. Riding Vespa's in the middle of the night, wasted!
- Man, that guy has got to be River-cidal. He has been at the bar way too long.
- I saw that man go Rivercidal after he went skiing in that water at Havasu.
- Oh no, my tire is falling off. RIVERCIDAL!
- Don't make me go Rivercidal on your ass! I'll jack you up!
- Let go Rivercidal tonight, I'm all liquored up.