One who constantly and furiously masturbates into his webcam while on chat roulette.

Credit to Ashley
"Yeah, tonight chatting I've met about 6 tools, four lonely guys in the dark, and three phantom jerkers."
by psycho_gerbill22 on AIM March 15, 2010
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one who subconsciously while sleeping jerks off their partner who is also sleeping.
KG (the Phantom Jerker) Phantom Jerked JP
by muskadusa December 23, 2009
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