In contrast to "riding my ass", which is when someone pesters you about NOT doing a certain task, this pertains to when someone harps on you about spending TOO MUCH time on a task or project; particularly one involving the upkeep or improvement of a car or motorcycle.
Wife: Another thing; you spend way too much of your free time working on that old junker in the garage!
Husband: Quit assing my ride!
Husband: Quit assing my ride!
by jigsawz67 March 22, 2011