lather, rinse, repeat

alternative wash, rinse, repeat · alternative rinse and repeat · alternative rinse-repeat

1. humorousinformaloftenIndicating that an action or process was repeated, or needs to be repeated.

   Lather, rinse, repeat until you get tired of watching your money go down the drain.

   2007, M P Dunleavey, Money Can Buy Happiness: How to Spend to Get the Life You Want

   2 more examples

   Use the step backward icon again and experiment with the other three icons, drawing overlapping shapes. Lather, rinse, repeat.

   2005, Deke McClelland, Galen Fott, Photoshop Elements 3 for Dummies

   Then, burned-out after a spring and summer of machining, testing, tweaking, lather, rinse, repeat, I took a driving vacation with my husband […]

   2006, Annalee Newitz, Charlie Anders, She's such a geek!: women write about science, technology and other nerdy stuff

2. informalsarcasticIndicating that an action or process happens often and is futile.