Man falls asleep sitting up in a desk chair. Suddenly, a cell phone on his shoulder rings. He wakes up, screams, and knocks the cell phone off his shoulder. Surprise wake ups, practical joke. Sleeping.
A dog looks under a pillow hearing kitten noises. The man behind the camera reveals a cell phone under the pillow with a cat meow ringtone.
Groom's phone starts beeping during wedding ceremony because he set a reminder alarm & forgot to turn it off. Vows are interrupted. Bonehead.
Baby boy sits quietly in high chair until mom's cell phone ringer plays. Baby dances like crazy to the ringtone. When music stops, he goes quiet again.