Someone, typically an
authority figure. Whom says that they are in your
favor; but is actually trying to
screw or otherwise fuck you over. Often for personal reasons.
"Hey man you remember the other night when the
boss told me that he would wright me a letter of recommendation for a job at corporate?"
"Yeah."
"Well he didn't. He threw me under the bus, and not only that, he instead wrote one for that one chick in accounting you know the roomers."
"Damn
dude that's
pretty El presidente of him."