I have a few issues with old people.
1. Taking forever in the checkout line!
1b. Taking forever in the checkout line, then slowly writing a check.
1c. Taking forever in the checkout line, then slowly digging through a massive purse to find exact change.
2. Blocking your path when you're trying to walk somewhere.
3. Driving when they can't see well or their motor skills are off or something. I knew a girl who had TWO cars totaled, neither accident was her fault, BOTH accidents caused by men over the age of like 85 or something.
4. They smell funny.
5. They think they're always right!
*Obviously this doesn't apply to all old people, it's just a sweeping generalization of quirks I often see in old geezers that really piss me off.