1) colin: bugger me my arse is itchin'    dave: ur bum nuts playin up again?    colin: yeah, i'll pick 'em out wi' chippin hammer
1) shit stuck to your arse hairs
"1) colin: bugger me my arse is itchin'    dave: ur bum nuts playin up again?    colin: yeah, i'll pick 'em out wi' chippin hammer" What is the definition of "bum nuts"?