What is Goonberrie?
1.
A sometimes bashful, awkward person that acts in a silly or goofy manner in a failed attempt to make up for the lack of skills
That teacher is acting like a goonberrie in trying to explain the situation so the students can understand.
See
Random Words:
1.
sl. for felatio. Originating from the similarities between the face a blowslut makes while she's sucking on your wang and the face..