It means to insult someone repeatedly (verbally-usually using things about them, yo mama jokes, etc)

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.

To masterbate. Or beat your meat. Perferably to a porn dvd or magazine. Prisoners are pro's to Gunning

prison term for jacking off

When you are smashing out a task or performing to a high standard. Originates from kitchens where chefs are working to a high standard, quickly and efficiently turning out covers.

A very stimulating activity of discontinuously throttling a (preferably) powerful motorcycle to produce an imaginable sensation of impending momentum as the drive chain repeatedly goes into and comes out of slack while the motorcycle hurls itself down a (preferably) steep road.

1.A combination of the word gonna and going

2. Going after someone/something