Simon Cowells slimy wink

[Sysman]

See.

Incidentally I believe the word comes from the French "Beard to tail" meaning to cook the whole animal from beard to tail.

This is what the OED (septic version) says:

ORIGIN mid 17th cent.: from Spanish barbacoa, perhaps from Arawak barbacoa ‘wooden frame on posts.’ The original sense was [wooden framework for sleeping on, or for storing meat or fish to be dried.]