Description of something that has achieved a new and ultimate level of sucking, such that there is almost something fantastic about it. Also see: craptacular, pukeriffic
Originally from the comedy sketch show 'The Kids in the Hall', "subtastic" conveyed the idea that the speaker was about to say 'substandard', but quickly changed his mind to 'fantastic' after smelling the wonderful aroma conveyed by the subject of the conversation.
"I've called you into my office to talk about your poor performance at work. Frankly, your work has been sub... quickly changes his mind ...tastic!"
Adj. describes the physical properties and characteristics of an object whose size, shape, general form, texture, pliability and prolongation resembles that of the human scrotum.
1. "My word, that hacky-sack sure has a lot of scrotasticity."