crudknockers 

a saying that means your boobs are very old and crusty

yeah Ms. smith has some crudknockers😋

crudknockers by booblovers June 26, 2021

Curbknockers 

A pair of (though in some exceptions singular, ex: amputees) sexy feet that one desires to use to get his or her jollies off.

"Say Ryan old boy, catch a glimpse of those sweet curbknockers!"

Curbknockers by florboolian September 14, 2018