upper decker

English

Etymology

Fromupper+‎deck+‎-er.

Noun

upper decker(pluralupper deckers)

1. (slang)Theprankofdefecatingin thecisternof atoilet,so thatflushingthe toilet brings in dirty water instead of clean.
   • 2014,John Waters,Role Models:

     Had he been doing “upper deckers”for years in his community?

   • 2017,Molly E. Lee,Love in the Friend Zone:

     Should've bet on him doing anupper decker.