one of my buttworms got on his finger

i (18f) and my boyfriend (18m) were being a bit silly and making butt finger jokes. i told him my butt was itchy and joked about it being the threadworms i had a month or two prior. he unexpectedly shoved his finger all the way up my bum (it was consensual) and in shock i just sat up and stared. i grabbed his hand because i wanted to make sure he didnt just get my poop on his finger. and thats when i saw it. a tiny white line on his finger. i looked at it closer thinking it might have been like a piece of thread or something. no, it was alive and wiggling. there was no poop on his finger at all. just a worm. he wiped it on a tissue, walked to the kitchen, and poured like 1/4 of the dish soap all over his hand. we're both humiliated. im taking this with me to the grave hence the throwaway account. edit: guys im huge on hygiene and used to be a germaphobe, i promise im clean 😂 its just an unfortunate situation. thats what happens when living with tiny little children