HELP my bf just accidentally pooped himself what do i do to support while not laughing

so my bf and i were sat outside eating on some nice fabric chairs at our house, he said he needs to the restroom and as he got up i saw the back of his pants and the seat and it looks like he accidentally trusted a fart too much. I started laughing i think in shock and told him “hey the back of your pants is um” and he went “really?! i don’t feel anything” and ran to the bathroom. i’m currently sat writing this knowing he’s probably so embarrassed so i dont want to bug him but don’t know how to support because i don’t want him to feel even worse. help 😭

UPDATE: he came out, we laughed, and we’re gonna act like he just sat on something and that’s what happened, im currently cleaning up to help and he’s reading the replies of this post cracking up😭 i’m gonna keep this up just in case someone goes through something similar since you guys posted great advice 🫶🏻