To answer the question directly I have locked my self out of my house about 3 times, and that was within about a 2 month period about 2 years ago.
The funniest story I ever heard was a call two guys I worked with (I am an LEO) that responded to a call of a woman that had locked herself out of her house. The guys were one white and one black. They got there and it is a 2 story house.
(Yeah, yeah, a real black & white)
Both were named Charlie, also. Known as CharlieW and CharlieB to keep them separate.
Any how CharlieB walked around the house to check all the doors and windows and saw a 2nd story window open. He figures out how to climb up and crawl in.
As CharlieB passed a window walking towards the front door the woman (about 60 years old) screamed out "Oh my God there's a nigger in my house". CharlieW responded: "Ma'am, that's no nigger that's my partner".
I guess you had to be there.. We all thought it was a hoot.
CharlieB is now the Chief of Police in Columbia, S.C. A really good guy.