Low probability of success
Twins sure do like to get over on people, even when they are not of the identical kind. I get that maybe, just maybe, these guys could fool the people at the department store, but for how long. Being 100 lbs. heavier and 3″ taller makes for quite the difference in both size and appearance. To me, they sound more like half-brothers than a pair of twins from the same parents. But hey, there’s nothing wrong with having a little fun at the expense of their coworkers. It helps to build comradery after all.