This could be a reference to the functions of the Goal Post in Sonic 3 & Knuckles, as you can juggle the Goal Post in the air for as long as you can after it falls from the sky in Act 1 of each stage. One of Classic Sonic's idle animations, where he points ahead of the stage...
After being launched into midair, the player can perform forward, backward and/or sideways flips, which will build up a speed boost that is initiated when the playable character lands. For each successive Stunt performed, the player accumulates and improves upon the resulting speed boost, but ...