I can see this going down like the beginning of Sonic Rainboom XD
Rainbow Dash: So now that you know the proper way to use the Shout, lets hear one! Fluttershy: Fus ro dah! Rainbow Dash: Ugh. You're gonna shout like THAT? Louder. Fluttershy: Fus ro dah!! Rainbow Dash: Louder! Fluttershy: Fus ro dah!! Rainbow Dash: LOUDER!!! Fluttershy: FUUUUUUUUUUUUUUUUUUS... RO DAH!!