Meaning to blatanty rip some off. The word has been circulating around english urban areas, historically from areas where Jamaican drug gangs have been prevalent, possibly originating from the potato
like vegetable which is the stable diet of many west
indian immigrants from the 1950's onwards. Regularly used in situations where drug deals have been arranged only for one of the parties to blatantly rip the other
party off, usually with the aid of a firearm.
The
guy set up the deal to YAM him.
He went to the meet with the
cash but he got
YAMMED.
Is he gonna come with backup, can we YAM him.