This is pretty awesome, but I just made a farty poopy flappy bird knockoff so I may be a bit biased. However I've always been a fan of gratuitous flatulence so I guess it's just a personal preference. Loved the sound effects and the almost violent "game over" window / fart! I enjoyed the art as well, and the poo trails per jump. Very charming overall :)
On a side note I'd like to say that I enjoy seeing all of these flappy bird clones. While I understand as a consumer it can be a bit tiring, as a developer it's interesting seeing everyone expressing their take on a single idea.