Lickarse

n.

Heard in Waterford, Donegal and Dublin

A person guilty of caressing the anus of a person of perceived higher social status, with their tongue. A suck up.

In use

Ya did all yer ecker again last night didn't you yeh big lick arse!

Posh English

You completed all your homework yet again last night, did you not, you obsequious flatterer.

Same phrase, other counties