Threatening to get one's balls/wang out and then backing out.
"i'm to teabag you" *unzips trousers*
"go on then"
*zips up trousers*
"awww. hes Doing a Ritchie "
When you don't turn up to work cos your on crack
Person 1: Hey mate, where's ritchie
Person 2 : He's on crack as always, doing a ritchie