TIFU by shitting my pants

On a date meeting my girlfriend of 8 months parents for the first time. Right after I finished dinner, I went to the bathroom to wash my hands. While I was there, I felt a fart coming and decided to let it rip. It was not a fart. Spent the next 20 minutes attempting to wash the stain off my underwear while giving my girlfriend a half-assed excuse on how I had to leave. Drove home commando with my shit-filled underwear in the trunk while was bawling my eyes off. Three days have passed, and her and her family are still upset at me for leaving on such short notice. I still don’t know if I should come clean or double down on my excuse and never speak on it again. I don’t know who else to tell this to who wouldn’t clown me forever for it so now I’m posting here. Fuck me.

TL;DR - Shit my pants while meeting GFs parents for the 1st time, now they all hate me.