Had to ditch a small amount of solid once. We were smoking round the back of the village shops (duh!) and a cop car pulled into the car park opposite us. Tin went one way, skins went another, and the hash went a third. They asked us what we were doing there, and we said we were meeting a friend - one of the girls had just finished work, and we'd met her to walk home, so it was the truth with bits missing. They were okayish with that, but told us to get home, and stayed in the car park watching us walk away. We went round the corner into a cul-de-sac and waited about 20 minutes. Went back and got the tin and the hash... the skins had landed in a puddle.