The question you ask when your step bro walks into your room with his big schlong dong out and about. Expect "Sweet Home Alabama," to start playing in the next few seconds.
Step Sis: *in a loli voice* What are you doing step bro? *bites her lip as she tugs on her skirt*
When someone enters your house without your permission and you are a big fan of shrek...
Who also hates people entering their swamp without permission.
Guy: I'm gonna enter his house at night, hehehe...
*Guy gets caught by house owner*
House Owner: What are you doing in MY SWAMP?