DumbFunnery

Front

Back (apologies for my handwriting!)

The text of the postcard is

Dear Ellen,

Sometimes I dream of traveling back in time with a bunch of umbrellas and distributing them to people. Just imagine how far ahead society would be in umbrella technology if only humankind had invented them earlier!

Sincerely,
DumbFunnery.com
OR @DumbFunnery

Why am I doing this?