AITA for pooping in my tinder date's sink?

So I'm in a sticky situation (literally). I (19M) met this girl (20F) online through tinder and agreed to meet at a local Italian restaurant (4 Stars). Everything went great and we got along well. After the date, she (20F) invited me back to her parents' (45M)(12F) house (1500 Sq. ft) that she currently lives at. So I'm at her place and while I'm there I need to use the restroom (50 Sq. ft). However, the toilet was too small for me to sit on (I have a fat ass) so I decide that the only place that can fit my scrumptious booty in the sink. Long story short, her parents (2M)(42F) kicked me (13M) out, although not because I (69M) shat in the sink (they do it too apparently) but because I masturbated (3 liters) afterwards and got my cum all over the bathroom (50 Sq. ft). My date (94F)'s dad doesn't want to clean the cumstains since he fears he may get pregnant from licking the cum. So Reddit, AITA?