Getting multiplied umpteen times. To be more precise
multiply into undetermined or so
many times. 'umpt'- from umpteen and 'iply' - from
multiply.
Eg.
Marc: Hey when my mom
said she is gonna get me a new
bike.. You can't imagine how happy I was...
Neil:
Dude you got to be really excited...then...!!??
Marc: My excitement has been umptiplied like crazy...
Neil: Umptiplied??
Marc: Yeah!! Umptiply.. is multiplied umpteen times...!!