dead turkey
When a guy puts his cock and balls underneath his legs, bends over and hops slightly. The cock and balls move up and down similar to a dead turkey.
Jack showed Jill a "dead turkey" to win her heart.
Dead-set turkey
Someone who acts like an idiot for laughs, all of the time, and will most likely never mature, but is otherwise harmless to fellow humans.
That mate of mine Pete throws his dog's shit straight over the neighbour's fence and into their pool, he's a dead-set turkey, honestly.