So when I was playing Super Mario 64 on my phone (using an emulator). Everything was normal until when I defeated King bom-omb (I forgot the spelling of the name). Usually when you grab a star and ground pound, you'll just fall to the ground quicker to save time in speedruns. I jump to the star and ground pound, instead of doing the star animation, it does the ground pound animation. I was surprised! The music stopped and I move around and suddenly the music is back (I mute the sound because I don't want to be noisy while in my room). Anyways, the game actually thinks I collected the star. So maybe the name of this glitch is called "Star cancel". This may be useful in speedruns! I don't know if it works on N64 but it works on emulator. Sorry if there are some parts that are not clearly explained, I'm ryping this using a phone so it's harder for me to explain clearly. Anyways, thank you for reading!