This looks real enough at first glance that it may result in a worried neighbor calling the cops.

The old 'man hanging off the roof while hanging Christmas lights' gag is pretty classic by now, but it was probably made most popular by Chevy Chase's character of Clark Griswold in 'National Lampoon's Christmas Vacation.'

It should be noted that people falling off the roof while doing Christmas decorations is definitely a fairly common source of emergency calls during the holidays, so if you've got plans to go up there yourself please take care so you don't end up recreating this for real.