Boop-Ding
Stimulation of the prostate of a man with a finger, normally the index finger, in order to create an intense, explosive orgasm.

Only correct stimulation of the prostate will create a Boop-Ding. When done correctly and with appropriate timing, the entire process can be done in the same time as it takes to say the phrase.
While Craig was enjoying his chance to jerk-off, he had to get back to work, so he gave himself the boop-ding and finished up quickly.