When your phone lodges in your breeches at an awkward or uncomfortable angle, causing a suspicious bulge in the crotchal region. It does not necessarily mean your pants are too tight (a common misconception),and can usually be explained away or even pointed out for a laugh.

when someone thinks you have a boner, but really it's just your phone in your pocket

An erection that occurs while talking on the phone to a girlfriend or some other real or imagined sexual partner.

1. The bulge in ones pocket caused by a cell phone

2. when you get a hard on through talking to someone on the phone

When your phone rings in your pocket and you get a boner

When a cell phone phone rings while in someone's pants pockets.

When you have your phone in your pocket and gives it the appearance of a boner.