This question is too vague, and needs more information. There are many brain teasers!
AN INSIDE JOB
Once in a blue moon
Zero.
Don’t know
At a glance
Frakinstein
To answer this question the brain teaser must be provided. The type of brain teaser or the place of the brain teaser doesnÕt give enough information for someone not looking at the brain teaser to be able to solve it.
That isn't a brain teaser
tennis
playing
Caeser
I love you
Possibly it is 'by and large'.
coochy
Gh
Hidden
YOURNONORIGHT
RighT by me