Usually done after the consumption of vast quantities of alcohol.
Somebody who has attained the ropable status can usually be found flaunting classy moves on a dancefloor, making an absolute martyr of themselves densely populated areas, slaying women by the dozen, removing clothing in public or spewing violently from over drinking.
Sam: I dunno... I'm keen for a big one.
Luke: let's get ropable!
Sam: did you see Hayden last night? He fucked a slut on the pool table then spewed all over a security guard!
Luke: is that before or after we ran through the McDonalds drive through naked yelling "suck on my big mac!"?
Sam: Man... He was ropable