Ate the shitebox
Heard in Dublin and Roscommon
Used to describe the act of rimming the anal canal, in quite a rude fashion.
Lad 1: 'You get the ride last night bud?'" "Lad 2: 'oh but of course, I ate the absolute shitebox out of her'
You get the ride last night old chap? Oh but of course I performed the most enthusiastic rimming upon her.