Lets Go Rolfing!

Huh? Last time I had to rolf I didn’t want any help. Now there is a piece of sidewalk spam for it. Why is the butt on the left picture the only one with a different color/pattern? And the name is Bautz?
Rolfing

Rolf. Rolf rolf rolf. Ha ha. Rolf. Bautz. Bautz rolf folf.

Lets Go Rolfing!