This wasn't during sex, but one day my ex was playing around with my nipples and sucking like they do. 'Mama' just slipped out, lol. It just reminded me of a breastfeeding baby! He was not impressed...
One of the first time's me and OH did the deed, towards the end he said "get some of that" But he sounded like alan partridge when he said it. I couldn't stop laughing!! Needless to say he never say's anything during sex now.
Not during but dh did wake up me to do the deed and the following morning couldn't remember - he asked if we did and then said he thought that he was Jack Bauer from 24 at the time - very very strange!!!!! (I enjoyed it though)