Whosamawasit
Whos-a-ma-was-it often substituted when the name for an item or object cannot be remembered, or said item or object is misplaced.
Brooke: “Hey Josh! Are you messin around with my whosamawasit again?”
Josh: “Brooke I haven’t seen your whosamawasit since the chingaderra disappeared”
Josh: “Brooke I haven’t seen your whosamawasit since the chingaderra disappeared”