Dallas Cowboys Star -- BIKINI BOOTY GRABBIN' ... On Mexico Vacation

Orlando Scandrick went to Mexico ... and all he got was TWO HANDFULLS OF ASS!

The Dallas Cowboys cornerback took a trip to Cancun with his "Basketball Wives" girlfriend Draya Michele ... and judging by the pics, they couldn't keep their hands off each other.

Our sources tell us the two were on a couple's getaway with some friends -- so Orlando could relax and chill out before he starts training for the 2014 season.