Austin Mahone I Can Undo a Bra with Breast of 'Em

11/18/2015 6:15 AM PST

Austin Mahone was all braggadocio at LAX Tuesday, telling our photog he's the champ when it comes to unstrapping his conquests. 

Austin's only 19, but he gives himself a 10 and explains his tried-and-true techniques.

The singer then takes us south to his feet, and reveals how much he dropped for a pair of "Back to the Future" kicks.