If you want to use the migger in a sentence you use it as follows:
If the person is using MiG type planes or jets you call him out
"Why are you a migger?!"
1) The term short for thing-a-ma-jigger that indicates an object whose name is either not necessary in the context or not remembered by the speaker.
2) A low-profile jig that Mick Jagger does when he wakes up on a sunny morning that promises to by a good day.
1) Hey, pass me that... umm.. majigger over there please.
2) No footage has actually been taken of him doing the majigger, but I swear it exists.