A bubble in your spunk created when air becomes trapped inside your penis, causing a person to blow spunkbubbles during ejaculation, commonly used as a derrogitory term.
Max : Im gonna cum!
Anna : WTF! You just blew a Spunkbubble!
Max : Shite
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Alex : You are a tosser!
Tom : You are a Spunkbubble!
Alex : You bastard...
The literal definition for "Spunk Bubble" is the tip of the condom that's sole purpose is to block and trap semen. If you were to call someone a "Spunk Bubble", you would be infering that the person is in the way and needs to get the fuck out of the way. True "Spunk Bubble" people are oblivious to the fact that they are wasting everyones time or getting in everyones way.
1. That fucking Spunk Bubble is only doing 45 mph on the freeway.
2. That Spunk Bubble Bitch has 47 items in the 10 items or less check-out line.