When She Followed Through On Her Threat

What's a threat that your girl (or you as the girl) has followed through on and what were you doing to receive the threat to begin with?

Ex. I tease my girl pretty often about whatever for fun, but she's quick to tell me "Stop before I grab your nuts." She follows through on the threat most of the time when I least expect it.

Ex 2 "Stop laughing before I kick you in the nuts."

Ex 3 "You'd better take me somewhere nice or I'm going to knee you in the nuts?"