What is Hellafast?
1.
hellafast is pretty damned quick. It's not as fast as stupidfast, but it'll still smoke things that are just "fast". e.g., ASDL is hellafast, compared to a 56K modem.
Man, this rig is hellafast. It beats the hell outta my dual celly rig.
2.
the speed at wich 
Mr. T's van is "hellafast"
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1.
An apt, popular remedy, well-known to a generation of Hollywood stars.
Cool, blonde QUIM NOVACAINE soon soothes your seething, itchy bi..