Turns out, he'd seen this clip of a girl getting sick on an airplane that (you guessed it) suddenly hits turbulence and drops rapidly, forcing that little sick baggie to almost invert into her poor face. Now that, friends, is a bad day.
Not for B, however! He laughed and laughed and laughed until he was legitimately at risk of needing a little baggie himself. Karma? Perhaps. But I love him so much!
(Ok, Ok, here it is. Be warned, it is NOT pretty.)