Verb: to accidentally dial someone with your cellphone by putting pressure on your
phone during
sex, causing the listener to hear the sounds of you having
sex with someone. Happens when you leave your phone on the bed, or it falls out of your pocket and on to the backseat of a car, onto the couch, etc.
Fuckdialing
example: "Me and this girl were banging on her
couch and her knee ended up on top of her
cellphone--she totally fuckdialed her mom. After we finished we suddenly heard this tiny voice saying 'Hello? Hello?' She was mortified."