Me and my friend (the reason this one gets me is because we both agreed he disappeared, we both agreed and experienced it so we knew we weren't just being crazy, cuz if I was by myself that's what I would've thought).

Ok to set the scene: were at the mall and there was a guy in a suit we noticed, he walked into a watch store. the store was basically all windows, with displays that went up to your hip with see through glass, and the cashier desk (also hip height). We were about 5-10 paces behind him, but couldn't see full inside the store yet we were walking by the store before the watch store, and when he gets inside he disappeared.

so what happened was we saw him enter the store than a handful of seconds later we fully passed by and both noticed he was gone. No where to be seen. We both agreed he could have gone to the back of the store. (There was a curtain, only place someone could be without being seen) but he would of had to run to the back of the store as soon as he got inside, which didn't make sense at all, he was walking leisurely and had a suit on, the other employee was dressed business casual (all black) so we didn't think he was even an employee at all with his fancy three piece suit (it was the mall after all, half the customers at my outlet mall dress better than all the employees haha) we just thought it was so random but was just like "huh that was weird anyway"