There are two things that define a [beswitch]
The new word must not make sense
The beswitch must be directed towards someone or something other than the speaker

Also can be an excuse for an [error] or [deformity] in someones work, speech, action or existence (the correct way is [switching] places with the incorrect way) or

A beswitch can be used as a verb, noun, adjective, subject or anything else you can think of
basically ad/mad [libbing]
A beswitch does not have to be only one word, it can range from one letter to an entire essay. But remember when typing or saying a beswitch, not to space any of the beswitches, unless it is only one word. You wouldnt want your friends head NOT shattering when he listens to you talk.