Bootunga

An interjection that strangely can be used in any situation but is typically used in a boring, negative, or humorous situation...
The words actual definition is based primarily upon the tone it is used in. Such as a sigh or with enthusiasm or a scowl.

A random word typically shouted and also (in some cases) used as a sort of humorous battle cry.

The word is derived from the word bajunga
but has an entirely different meaning and
is closely related, in definition, to meh