Years ago, my neighbour died suddenly. Her identical twin came to the funeral wearing her dead sister's dress and coat....
See, I reckon that depends on your perspective on it: some might see it as creepy and disrespectful, whereas others might see it as a really touching tribute to their lost loved one.
A man injecting heroin into his leg at 12pm in a multi storey car park in Liverpool
How do you know it was definitely heroin, though? Could it not have been insulin or adrenalin or something?
We were driving down the M40 on our way to take family members to Gatwick for their honeymoon and a minibus overtook us in the next lane. At least four blokes on board gathered at the nearside, lowered the windows - and their trousers and pants - and mooned us, cheering loudly. It was almost like it was a belated stag night escapade, except they were complete strangers to us and our (ordinary and unremarkable) car wasn't 'wedding marked' in any way.
When we were at university, we were walking along one of the main roads, when a car went past and somebody in the car just randomly shouted "CHICKEEEEEEEEEEN!!!!!". That was weird enough, but then, a week or so later, we were in the supermarket and an announcement came over that they were selling off some reduced-price chickens at the deli counter. Immediately, a familiar voice could be heard across the shop - "Do you wanna buy a CHICKEEEEEEEEEEN?????!!!!!" - I think he was actually louder than the tannoy 
Also, walking down the hill to be met with a line of five pairs of pants strung across the road, between two lamp posts, with P, A, N, T, S written respectively, one letter on each pair!