dolan’s ass, n. — Green’s Dictionary of Slang

dolan’s ass n.

[proper name Dolan + SE ass; it goes ‘a bit of the way with everyone’; ? anecdotal origins]

(Irish) a time-server.

1961

F. O’Connor An Only Child (1970) 115: I am a natural collaborationist; like Dolan’s ass I go a bit of the road with everybody.