Hadouken

Danny and Tucker are playing Street Fighter 2 and after Tucker wins, he tends to glot. After getting fed up with his friends constant glotting, Danny decides to send Tuck a message that goes along the lines of "SHUT UP!"
The idea came to me because in some DP episodes Danny fires ecto rays with both hands together which to me looks like he's either doing a Hadpuken or a Kamehameha. So... right...

Danny Phantom (c) Butch Hartman and Nickelodeon
Street Fighters (c) Capcom