Take a nostalgic picture of a fifties pin-up girl and edit it in a strategic place in Photoshop. The result? Lightly hilarious and very recognisable. On Menstralpinups.tumblr.com you’ll find calendar girls who unexpectedly had Aunt Flow coming for a visit.
Do you also have a suitable picture? It’s possible to upload it on the site as long as it adheres to the dress code: all girls have to at least wear bikinis.