Not my first time but I remember it more than all the rest.

Before I was a solo tripper 4 of us were camped on an island. Full moon and one of the guys had to relieve himself, so he walks down to flat rock on the edge of the water and starts doing his business.

He's in his underwear and half asleep. Apparently he was peeing where a beaver was cruising and we heard two splashing sounds?

The first one was the pissed off beaver, next was him falling into the water.  ;) ;D ;D

  He never did that again. Swore the beaver "attacked" him but we all knew better including him. :-[ ;D ;D