Think about the sketchy nature of the rc market here.
Now i've never been to columbia, but i'd be willing to bet the cocaine dealers there would be just as likely, if not more, to sell something potent like 2cb heavily cut with numbing substances as cocaine in order to 1. Profit more, & 2. Mask the burn & psychedellic effects of larger doses.
possibly extremely dangerous when used in that manor. A 50mg bump of pure cocaine is all fine, it won't kill you. But it's repeated all night.
Even at a heavy dilution, 10mg bumps of 2cb mixed with say lidocaine for numbing, every 45minutes to an hour throughout the course of a night could land you in trouble. Especially if you have no idea you've been using a powerful psychedellic this entire time.