Last year I was slashing down some thick winter weeds down the back corner of the yard. too tight to get a mower in there, so I use a couple of line trimmers. These weeds are thick, and up to knee height. I am slashing and slashing (with 2.4mm line the trimmer would bog, but 1.3mm it would chop through at ground level easily) and get up near the fence.
Big dead spot of grass, didn't think anymore of it. Turns out, a week prior, the off contents of a rather large jar of home made pickled onions were disposed of down there as they would stink out the bin otherwise.
I hit them at full throttle - all up the fence, in my face (glasses on) and all over me.
The other good one was how I once (in about 2010) somehow acquired (no idea where it came from, I know I didn't buy it) about 3-4 cartons of a carbonated juice called LOL. Apparently it was owned by Heinz.
Anyway, I tasted 1 tin, and it was one of the most disgusting drinks I have ever tasted (although I tried Carlton Zero last week and didn't care for that much either).
So i had probably 50 cans of this stuff that was about to go out of date. So we grabbed a big shovel and played cricket with the bloody things. Tins were quite tough, and they often ended up pretty agitated by the time they popped.
This stuff ended up all over the lawn. Now the odd thing was, I was chucking all the buggered tins in piles - all the black coloured cans (black current from memory) went in one pile, and the silvers went in another.
The grass under one pile shot up over the next few weeks, the other died. The only thing I can put it down to is the amount of food acid in the different flavours.