The pins and needles feeling you get in your legs after sitting on the toilet for a long time. Kind of like sea legs.
Dude I just took a massive dump for like, 15 minutes and now I've got major toilet legs!
When your legs go numb from sitting on the toilet for too long.
After spending 2 hours scrolling Instagram In the bathroom I developed a case of Marko's toilet leg syndrome (MTLS).