the way that a redneck, usually one that
hails from the Southern United States, refers to their
pick-up truck. The added "'em" is
the addition of Southern dialogue to the general name of a common type of truck, and usually makes the person driving appear to be of low intelligence
Cletus: Its a
darn tootin fine day here in Mobile, Alabama.
BillyJoe: sure is Cletus, its mighty-fine. Wanna go for a ride in my fancy
Ford F-150 pick 'em up truck?
Cletus: Yeeeeeeeehaw lets go!!!