wassamacallit 

Something you can't remember the name off something. Can be a good thing to call random stuff.

"oh yeah that um um wassamacallit"
"Oooh yeah the wassanacallit"

wassamacallit by PissTake123 March 25, 2017

Wassacallit 

Referring to one thing or place that one cannot recall the exact name of it at the moment

Grab that.... ummm you know. That wassacallit! (Talking about the blunt)

Wassacallit by Pear1 March 11, 2018

whosamacallit 

When you can not quite remember an individuals name.

Remember whosamacallit from the Marching Band?

whosamacallit by Theophilus North October 18, 2010

whatsamacallit 

The word you say when you can’t remember the word for it

Anyone know where I put my whatsamacallit?

whatsamacallit by Candji February 17, 2022