What is your "guess I can't go into that store ever again" story?

My mom always went all out during birthday parties for my sister and I. If we wanted a Spongebob party, you bet everything down to the ice cream would be yellow, pineapple flavored, and have some sort of decorations. She planned games, crafts, movies, EVERYTHING; She's amazing.
One year, my sister wanted a horse themed birthday party. So my mom takes my sister and I to Party City to find horse decorations. We search the whole store probably three times while I cry every time we pass the Halloween displays and we can't find anything. My mom asks an employee and they bring her some My Little Pony decorations, but my sister didn't WANT My Little Pony, she hates that show. My sister didn't say anything, but my mom insists they look in the back for horse decorations.
Again, only my little pony.
I hardly remember this part, but I guess my mom just...snapped as if the emotional bottle was at 100% and the poor party city employees put one extra drop of emotions in her and we were asked to leave. We've never been back to party city, but you bet my sister got her horse birthday party.

/r/AskReddit Thread