Yes!! I can't believe this is a thing. I was sitting here at my desk, writing away with my Red Bull, and heard this really faint chirp--just like a baby bird. I freaked out because I thought there might be mice (or birds?!) living in the wall by my desk or something. So I set up a timer and counted the seconds in between chirps, and they were regular--about 40 second intervals. I figured out it was coming from the can...what the heck is this?!
And that is just kind of hilarious given the tagline about giving you wings...we're getting wings because...we're...drinking microscopic baby birds?!
If anyone has figured out what exactly this is (must be the bubbles somehow), and if it's ever happened with soda or beer cans...let us know!