to accidentally dial someone's phone number by sitting on your phone, leaving a very confused person talking to your pants.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

When you sit down and your phone calls or texts a random person from the movement. Usually happens at school or at the office.

Taking your phone from your back pocket and realising you called someone.

When your cell phone accidentally calls someone you did not mean to while on your person.

accidentally dialing a cell phone thats in your pocket and the resulting broadcasting of a conversation to the last person dialed

v., buttdialed, buttdialing, buttdials.

1. To phone a friend accidentally using ones buttocks. Usually this is a result of sitting on the phone.