doofloppy 

an object in which you cannot identify the name despite your efforts. The word is usually preceded by a pause as you perform a mental search for the object's name... unsuccessfully.

Can you hand me the... doofloppy?

doofloppy by you'renotmymom September 12, 2011

doofloppy 

a man's OUTternal organ. his best friend. princess sparkle. his PENIS.

Raja was playing with his doofloppy all night.

doofloppy by NanduTang April 15, 2006

Dooflopper 

Child’s penis

Cover his dooflopper; he might pee while you’re changing his diaper.

Dooflopper by Larubiaexplosivia July 20, 2023

doomafloppy 

see thingamajig.

Gimme that doomafloppy over there.

doomafloppy by fizzle April 5, 2004