Yeah, I always get nervous when I show my real ID when buying a cigar or something. They squint their eyes so much and try checking it really hard to see if it's fake. But that was with my high school ID cause high schools make crummy ID's, I got a NY state ID and had no problems, but they still squint their eyes checking the date of birth.

Some stores are really fucking stupid, indeed.
I went to this store owned by the dumbest group of Arabs I have ever witnessed. I tried to buy a cigar and only had my college ID but it didnt have the DOB on it so they didn't let me buy a cigar (i kinda figured that college students would automatically be labeled as 18+ but and again, ive met some 17 yr old college freshmans), so I said "Sigh.. you want me to just bring another ID that has my DOB on it?" and they said ok so I went back to my dorm (only 2 blocks away) and got my ID and came back to the store, I slapped my new ID on the counter with a confident smile and check this- the guy looks at me like wtf and asked me what it is I want.
HE FORGOT WHO THE FUCK I WAS!
I was gone for less than 10 minutes and he forgot who the hell I was! I'm damn sure not many people came to the store either in order for them to lose track of customers.
The guy totally forgot who I was, so I asked "remember? I wanted that cigar but my ID wasn't good enough so here I am with my new ID with the DOB on it!" and he still looks at me like a dumbass. He looked at my ID and checked the name and still couldn't remember.
Their math was really fucking bad too. Even after looking at the ID, they pointed to the -you must be born on 1988 to buy tobacco- sign (this was last year, was 19 at the time). They couldn't seem to tell that 1987 is a year before 1988. He even had to ask his coworkers for help. What a fuckin loser!
That store had the dumbest workers I have ever confronted.

My friend is a local there and he said 'oh those guys will NEVER rememeber you.. ever.' and coming from a local who goes there a lot and the workers cant even remember some of their best customers?

Dmo18, fuck that store and just go to a new one, some stores are just really fucking retarded.