2. (verb) The act of "melting" the aforementioned film off of the glass dick while inhaling the resulting smoke in an attempt to get high after you've smoked all your d.
3. (verb) The action and reaction of recrystalization of crystal meth when melted completely and then cooled.
My roomate smoked the rest of my shabs and now I'm stuck cracking back!
I can't believe this shit is good! It's actually cracked back!
Jake- Hell yeah... but lets crackalax for an hour or so before we go
Erik- Aight. But where are we gonna get the crack mayne?
Jake- Don't worry i know this crack-back who is always hangin out behind taco bell... we can score some off him