whatchamahoozit
A substitute word for any person,or thing, that you can't remember the name of.
"Where is my whatchamahoozit Bill?"
"I've got to get the whatchamahoozit fixed before the weekend."
"Did you phone whatchamahoozit?"
"Are the whatchamahoozits coming to the party?" plural
"I've got to get the whatchamahoozit fixed before the weekend."
"Did you phone whatchamahoozit?"
"Are the whatchamahoozits coming to the party?" plural