Saturday?

I never seem to insert a battery the wrong way, that is, with the wrong polarity facing the other direction, into an electronic gadget.  That said, our story begins anew.  I mistakenly picked up the wrong kind envelopes the other day while at Long's Drugstore.  I meant to buy self-stick envelopes, instead I grabbed the gummed type envelopes off the shelf by miscue.  I know already that gum-envelopes have triangular flaps and the lapels are clearly pictured on the outside graphics of their boxes.  Apparently. 

Return the the wrong item to the store?  I already opened the box along the lines of the manufacturer's handy tear strip.  Yeah, I could lick the envelopes shut.  However, only geckos do that.  That'll be tantamount to licking the food photos that food bloggers post on their blog.  In this day and age, there ought to be a law banning saliva activated lids on envelopes.  Even with postage stamps, it has to be self-stick adhesive on the back side of the stamps.  I've used a moist kitchen sponge to wet gum backed stamps, in the process, the glue gets wiped off, and the stamps wouldn't stick to the letter.