i tried the squatbox

[ymw]

Did not work as advertised. Messy venture, seat now crooked from slipping, ass bleeding from excessive wiping of overly soiled rectum.

Possible causes:

1) I'm not black. The guy in the demo video was black, does this matter?
2) I'm too fat. I'm not sure if I got enough knee elevation because of my gunt.

Has any fat white man confirmed that the squatbox functions as advertised? Please advise.