Mom NBT is an acronym which stands for May Or
May Not Be True. It is used with
sarcasm to describe an
awkward, embarrassing, or strange situation that is actually true though you don't really want to admit it openly.
Mom NBT It's Friday
night and I am home alone watching
Hannah Montana.
Mom NBT I made out with a chick with a mustache last
night.
Mom NBT I have no recollection of what happened last night.