Forget breaking the ice, Jason Kelce broke wind on his second date with Kylie ... opening up on the time he let out a poot during an ice skating excursion early in their relationship -- and it's still got his wife rolling to this day.
The retired NFL star shared the hilarious story during a Valentine's Day episode of the "Not Gonna Lie With Kylie Kelce" this week ... when the couple answered some questions from their beloved fans.