I knew I was back in the States when:
I asked a flight attendant to help me put my carry-on luggage in the overhead compartment.  The attendant remarked, "You are too little.  Are you still growing?  I hope so!"
I was on campus waiting in line to get some food.  The guy behind me inquired, "I don't mean to be rude, but can I ask you a question?  How tall are you?"
Yes, I am officially back from Lilliput and in the land of giants, where I can get a handicapped driver's license in Jersey because I am under 5 feet tall.  Hooray!
Actually, that last part isn't true, unfortunately.