arshing around 

a slang term for childish behavior. also know as "messing" around

Tom finished his assignments for the day, so he spent the rest of his afternoon arshing around in his back yard

arshing around by D-cran in the house January 3, 2010

piss arsing around 

Conducting ones business in a less than orderly manner somewhat in the opposite of regimented. Acting the cunt.

He was completely piss arsing around like some sort of cunt.

piss arsing around by Jay_Guevara March 18, 2016