My sister and I were at the store once (Eryn's 7 years older than me) and this is what happend (with another not-so-bright lady).

Lady (to me): How old are you?
Me (a little bit ago):12
Lady (to my sister): How old are you?
Eryn: 19
Lady: And she's your daughter?

Then she walked away acting discusted Yeah, like my sister had me when she was 7