It always happens at sporting events on Valentine's Day. Eventually, during a time out or break, they will show the "Kiss Cam" and point it at random couples in the audience.

One Minnesota Gophers Hockey fan came prepared for such an occasion, especially since he brought his sister to the game with him.

Do you think my wife would get mad at me if I held up a sign saying "We're married... We don't kiss anymore"

Probably not going to do it... I kinda like living indoors.

[Source]