That happens to me while working at Minnesota State Fair or State Capitol snack shop... People who work with me or legislators or lobbyists or staffers know me- sometimes visitors come and wanted something, sometimes I can't get what they say while lipreading, so I had to tell them to write paper or repeat, but sometimes lucky when there is someone that know ASL or some signs.. sometimes people gestured like a father who relaized I am deaf, so had bag of chips and gestured to open it for his son, so I did. I have hard time understanding little kids talking, so their parents talked to me for them for more clearfity. I would never flip a birdie at the Capitol or State Fair or I will lost my job.