Wonderwho

Wunderwhoo
-noun

1.
The guilty party who chooses to remain in silence when their act is uncovered by the vicitm

2. Often the cause of extreme irritation by cohabitants or cowrokers

Me- said to 2 roommates :
"Wonderwho ate the last piece of pizza..."

Roommates: ".............. not me..............."

Me "well it didnt eat itself.... *@%!..."