jap flaps
slippers (slippahs), zorris (zoris).  "flaps" comes from the slapping sound slippers make when you walk with them.  "jap" comes from japanese recognizing that many japanese people from Hawaii wear them.  although linked to Hawaiians, the term used mostly in southern California.
Person 1:  Anyone seen my jap flaps?  
Person 2:  Just use grab whoever else's fits.  We go family style here.