Men are from math class,  women are from Planet Prom, evidently.

April 11, 1961: What's with the high handlebars set? Well, an elderly gent in Bermuda shorts was reaching for the sky, as seems to be fashionable, while riding his bike on San Vicente Boulevard Sunday. Motorists were laughing madly, Matt Weinstock says.
 
DEAR ABBY: When a man and his wife are on a motor trip together, who should ask the man at the service station for the key to the ladies' room?