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1.
1. The figurative erection that one gets when they see a new model of cell-phone that they want. This is usually accompanied feelings of pseudo-sexual arousal.

2. The literal 'bulge' that one gets in ones pants from carrying a cell phone in the front pocket of ones jeans. It was more prevalent 5 to 10 years ago because of the large heavy cell phones of the time.
1. Suzanne: "Oh my god that phone is sooo fucking hot.. I want it so bad!...
Mike: "Oh my fucking god, check out the phone boner on that bitch!"

2: Suzanne " Ok, see you later guys...(puts cell phone in front pocket)"
Mike: "Oh my fucking god, check out the phone-boner on that bitch!"
by squinty-mcgee November 19, 2007
 
2.
When you put your phone in your pocket and it causes a bulge to appear.
Dude : What's that bulge?
Dude 2 : Phone bonerrr!
by sahgdjsd February 26, 2011
 
3.
The bulge ur cell phone has when its in your pocket no matter what pocket
Can i use ur phone"? "naw i dont have it" "i can see your phone boner
by mattapotamusmcgizzy November 05, 2010
 
4.
When you get an erection from talking to someone sexually or not on the phone.
"Dude I totally got a phone-boner from talking to that hot blond last night.
by GeekVault August 27, 2010