Sonic telling Emerl to ignore Knuckles. This is pulled at a time when he doesn't realise how Emerl works, meaning Emerl genuinely ignores Knuckles.
Technically, Sonic has just discovered how Emerl works. Sonic is Trolling Knuckles. Still funny.
The end of Cream's chapter, where Sonic compliments a frozen, angry Eggman on "his new dance."
Also in Cream's chapter, while Emerl and Cream are training in preparation for a fight against Chaos Gamma, Eggman tries to call them on the computer nearby. Neither of them pick up, which leads to Sonic not believing that Eggman has anybody hostage.
The name of Skill #003, Sonic's Air Action: "Sonic Ballet". Tell me that doesn't conjure up funny mental images.