i like it when im at the airport in line to check in and i get the line guardian telling me that the line is for first/biz/1K/GS pax only..it is fun to calmly reply "i know" and continue to stand in line while i await my F/C boarding pass. most of the the time, during actual boarding, i dont get many looks from people despite being 25 and in jeans/tshirt type attire.