Resting on my laurels
Sitting on my ass doing nothing. Laurels were given as honors of achievement as in a crown of laurels for Roman senators. Someone who rests on them is considered lazy.
Man: The floor needs to be mopped.
Woman: (While washing dishes) It's not like I'm resting on my laurels here. I'll get to it when I'm done with this.
Woman: (While washing dishes) It's not like I'm resting on my laurels here. I'll get to it when I'm done with this.