Super Mario World (SNES)

Clogged chimney

Go to Yoshi's House and keep pressing the L and R buttons. Sometimes the birds will pause, and the smoke from the fireplace will skip. If you're lucky, the smoke will go crazy. It's hard to describe, but you'll know it when it works. If you can't reproduce the glitch after about a minute, re-enter Yoshi's House and try again.

Found by: Deezer