please, please don't leave the house in yoga pants unless you are actually heading to a yoga class. and if you MUST go to the grocery store in them, you know in the event of an emergency, please choose one that is next to a gym. at least that's what i do and then no one is ever the wiser, well until they see that there's a box of hostess cupcakes in my basket. after all i said it was an emergency ;)
but in all honesty, i'm only looking out for you. yoga pants are a slippery slope. at first you're all "oh it's just this one time and who's going to notice? they're black after all and look so much like regular pants. I'll just put on this cute matching zip front jacket and be quick. just in and out"
then all of a sudden you're leaving your house in your husbands red sox t-shirt from the '86 glory years and flannel snowflake pajama bottoms, wondering if no shoes really does mean no service. and then you end up a square on wal*mart bingo or worse an actual spy photo on the people of wal*mart website.
do yourself a favor just don't do it. i respect you more than that and realy a cute t-shirt and a pair of jeans (even mom jeans) is a better option in the end.