My mum has to have a hysterectomy. She is v worried about it and I was upset to hear that she has to have one, even it is quite a common operation.
When I told my ILs, having just got off the telephone from my mum, my FIL seemed to think it was a big joke and said "What's a gearbox between friends?". Apparently, 'gearbox' is slang for a uterus...
He's lovely but not known for his tact... It was probably the timing of his silly comment, but it has irritated me :(