Boy, ain't that the truth. One year, a relative of mine showed up late to Christmas dinner, with a broken nose. When everyone asked him what happened, he said, "Do you want the truth?"
No way to back out of a lead-in like that, so he told it, in front of women, children and all: "The girl I was with last night jumped into bed on top of me, and ended up hitting my nose with her chin."
Kinda cast a pall over the day, at least for some of us.