Funniest story I have was when my cousin and I and our respective children were on holiday together in France.
My cousin was anaemic and had been prescribed iron tablets by her GP, that she was taking. She'd complained that they'd given her somewhat of an upset stomach.
Anyway, one evening, I cook nice pasta, creamy sauce, salad. Wine. We decide to go for an after-dinner stroll in the countryside near where we're staying. Children stay behind at the house to hang out.
We'd walked about a mile when suddenly my cousin stops mid-conversation, glances around desparately and hisses at me 'I need the loo - the pasta's gone straight through me'. I helpfully point out the fields nearby (behind a small country house). She starts hobbling towards the spot - then says - 'it's too late! I'm shitting myself!'.
She continues hobbling to behind hedge in field - I stay by roadside, slightly hysterical (not really knowing the etiquette of what one does when a relative shits themselves, I stood there shaking with laughter). As I stood there, all manner of explosive bowel sounds filtered from behind the hedge, with my poor cousin saying, in astonishment, 'it keeps coming out! I can't stop it!'.
We were then faced with the dilemma that she now had no useable knickers or trousers (they were cream) and were stuck in rural France. So, I ran, still hysterical, over the fields, back to the house. Cue kids asking what I'm doing and where's my cousin gone. Cousin's teenage daughter asks why I'm getting clean clothing and a toilet roll. I mumble something about her being sick. I jump into car, drive to field, lob clothing and loo roll and plastic bag at cousin and let her get on with the clean up. She buries shit-covered pants in the field (God knows what the farmer made of that) and we head home.
Her daughter, when we got back, was MORTIFIED. She kept saying 'mum, that's soooo disgusting. I can't believe you did that. I'm going to tell dad. Ewww.' She phones her father, informs him that 'mum's pooed herself, it's so gross', whilst I continue to giggle helplessly.