Define How Low Can You Go Meaning

How Low Can You Go
when a guy has the longest boner possible and need to take a crap, and when they sit down on the toilet, the penis goes over the toilet seat, and worrying that they might piss off the seat so they need to lean over super far to get their penis in the toilet area.

Your best friend outside the bathroom: HOW LOW CAN YOU GO!
You: SHUT UP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
By Dulce