Lovely day today, light breeze, sun's in the sky so I opt for a floaty skirt and t-shirt and decide to walk to the nearby Tesco Express on my lunch break to go and grab something to eat.
As I come out, my arms full of handbag, shopping and phone, the light breeze decides to lift my skirt high, around my boobs revealing everything (today was the day I chose not to wear tights) and showing the whole city my white, lacy knickers. And not-small-at-all bum. 
People saw. Children pointed. Old men laughed and commented.
I had no hands to hold my skirt down so pressed myself against the side of Tesco (large window) to hold the back down and used my handbag to push the front down.
Old man still laughing.
I try and laugh it off with a particularly joyful old man and eventually get the situation under control. (Cars had slowed down by this point to look)
Only to realise that I wasn't actually holding my skirt down at the back with the window but in fact had my bottom (skirt caught up) pressed against the glass right next to the queue for the tills
To make matters worse the ground in Tesco is lower than outside so my arse was basically at head height.
WIBU to never show my face in Tescos again? Not that its my face they'd recognise... 
(If anyone has some embarassing stories to share, I'd be much obliged. This happened hours ago but you could signal planes with my red face)