Usually, in this context, one uses a wink face to indicate sarcasm and a smiley face to indicate you find something amusing. Also, I wasn't under the impressio

Usually, in this context, one uses a wink face to indicate sarcasm and a smiley face to indicate you find something amusing. Also, I wasn't under the impression that he thought bumble-bees can’t fly, but that he is of the belief that at one point in time, scientists couldn't explain how it’s physically possible and that that is where this factoid came from.