The act of placing ones cellular device onto their genitalia, followed by a person sending repeated text messages, until the recipient of the textjob reaches sexual climax. Has been known to cause damage to cell phones when performed carelessly.
Jim: Man, Dave was really pissed after I banged his wife. He wouldn't stop texting me, so I threw my phone in my pocket and he gave me a textjob!
Todd: Nice dude! Now Dave and his wife have made you bust a nut!