The Link Boomerang glitch (In Super Smash Bros. Melee) is a minor glitch discovered by Jimmymcjimthejim that causes Link's Boomerang to get stuck to his arm, thus disabling his ability to throw it again. This glitch is caused by getting touched by a poison mushroom, whist in Tiny Melee, during the animation when Link is throwing his boomerang. It is seen to randomly get fixed, and dieing will also fix it. Also, this glitch was only tested in Version 1.1, so it may not work in any other version.
Here is a video on YouTube demonstrating the glitch.