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1.
blump-kin (adj.)
The description of an action or event that is so incredible that it can only be accurately described or compared by the reception of a blow job while shitting.

word origin - "BLUMP" Old French Porn -, "KIN" - Middle English, Blump-kin Urban Dictionary
My last blumpkin was blumptastic.
by Tim January 24, 2004
 
2.
The most accurate adjective to describe the feeling of relieving the bowels while receiving head.
That was blumptastic baby... now clean up.
by jwn February 03, 2004