paper funnels and frustration...

so about a week or so ago, i was at the gas station, getting a fill up, when i realized it's been a while since i checked my oil. i pop the hood, check the dipstick, and sure enough, i was about a quart low. i pop into the mini-mart, and grab a quart of oil.
while waiting in line, an older dude comes up to me and says "do you know how to use that?". i quickly scan the line, and realize he's talking to me. after giving him a confused look, i hold up the bottle and just say "the oil?", he replies "yeah, do YOU know how to use that?". i lower the bottle, and give him a curt and exasperated "yeah...".
when i get to the front of the line, i ask for a paper funnel, the attendant rummages around behind the counter for one, and this same dude feels the need to comment again, and says "paper funnel?!", i am over his sexism and just say "yeah. it makes it easier", tun on my heel, and leave shaking my head.
*sigh*