Bit of a long one! My dad is the source of many of my funny stories; he's quite impulsive and doesn't care what others think.
As a student I was living in a houseshare in the city with 8 housemates, and my parents lived 30 minutes away.
My dad was coming in to pick me up in his van, which was full of rubbish tools, as he's a labourer.
I went downstairs to wait for him, and met the landlord who had come to collect the rent (which we put in envelopes in a wooden locked rentbox on the wall) and two housemates who were good friends of mine. They were standing around the rentbox, because the landlord had forgotten the key and they were discussing what to do because he really didn't want to drive an hour home to get it and then back. It was a very small padlock (he obviously trusted us!) so it wouldn't have been too hard to get it off somehow and easily replace.
My dad arrived, and got chatting to the landlord while I started talking to my two friends about the last night we were out.
Dad mentioned 'I've got the very thing in the van to get that padlock off' and popped out without my friends noticing.
Next thing they knew, they heard an almighty roar and spun round to see my dad coming towards them with a massive circular chainsaw, no warning or anything, which he used to cut the tiny padlock!
They were both so freaked out, and said later that they wanted to sprint out the back door from the madman with the chainsaw but one just froze, and the other stayed because myself and the landlord stayed put.
They also said they'd never date or mess with me, cos they didn't want to find out what else he had in his van!