You might not want to invite these people to your home

Jason and Jenny Cairns-Lawrence, from Dudley, West Midlands, U.K. were vacationing in New York City in 2001. On September 11.

Four years later, on July 7 they were visiting London (see photo above).

Last month, they took a trip to... (wait for it)... Mumbai.

Found at Arbroath. Image credit here.