When your in the mall and that one old guy stares at at you.
Or...
You're done shopping from JCPenny and you're walking and walking until you're about to avoid another body, but they turn right, when you turn right, then you turn left but they're trying to turn left, and you're both making this weird awkward dance trying to pass each other.
Or...
When old ladies makes that weird "IcanholdmyowndoorIdon'tneedyourhelp" face after trying to be nice.
Or...
When a kid, boy or girl, learns the names of the their reproductive organs and just repeat it over and over and over and over and over and over and over and over again without their parents stopping them.