Late PAX
Easyjet from Stanstead a couple of years back, we were missing 2 passengers. Cue mutterings from the cabin and the usual pointed announcement about offloading baggage from the flight deck. Enter two rather red-faced and breathless passengers...
...and about 30 people in front of me waved their hands in the air in a kind of "Mammy" way. Apparently they were a party of deaf people off for a break, and of course their friends had not heard the announcements. Not sure what would happen in an emergency of course, let's hope thay can lip-read!
Cheers - SLF