If I stop laughing at fart sounds when I'm 35, it'll be because I'm dead.
It's just a demographics joke. I hope you are still amused by flatulence past the ripe old age of 34... even if you do cause a world-rending paradox, you selfish bastard.
43 and still laughing. Teaching my 6-year-old to make the sounds. All is well.
Almost 50. I laugh through the tears at fart sounds.