You are in class alone and are making the trend 'Hi kids this is your mom' because you happen to be bored.

"Hi kids. This is your mom"

You said as you started recording but out of nowhere suddenly your most annoying deskmate, Kaiser, who had just arrived in class, immediately looked at you with a grin.

Kaiser suddenly puts his arm around your shoulder and smiles at your cell phone camera with an annoying expression

"And this is your dad"

Said Kaiser while grinning annoyingly and annoying you for bothering you