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2.
To masturbate and be caught. Can be said as plain "boyce"
I walked in on him boycing himself!

when he annoyed me i told him to go boyce himself.
by Turtle Penguin July 08, 2010
 
1.
Answering a question not asked of you, answering a question with excessive detail, proving a highly technical answer to a casual question
Tom "Hey Matt, what time is it?"
Steve "It is 8:43"
Tom "Stop Boycing me"

Stan "Hey, how hot is supposed to get today?"
Ryan "It's supposed to be 110 degrees Fahrenheit with relative humidity of 12.5%, no wind and a heat index of 107. The UV intensity will be 10 out of 16 and the temperature today will be highest it has been since this day in 1972."
Stan "Hey man, stop boycing me"

Jon "Is that a '69 Mustang?"
Patrick "Yeah it has the 302 cu in (4.9 L) Windsor V8 (1969–1970) 2-barrel, which puts out 210 bhp (157 kW; 213 PS) @ 4,600 and 300 lb·ft of torque (407 N·m) @ 2,600."
Jon "That's a total Boyce answer."
by sinbad91 June 05, 2014
 
3.
Verb. The act of masturbating and being caught. Common insult. Can be said as plain "boyce"
When the boy was being annoying I told him to go Boyce himself.

I walked in on him boycing himself!
by Turtle Penguin July 07, 2010
 
4.
The act of completley destroying a toilet bowl. Can be used as "Boycing" or "Boyced"
Guy1: That pizza really didn't agree with me and I ended up boycing hard.
Guy2: That's nasty!

Guy 1: Dude, where were you at the party? I didn't see you!
Guy 2: Man, I totally boyced that place and got out of there.
by JcMister21 December 21, 2011