The pearlescent frothy precum usually found at the tip of a teenager's cock when he furiously masterbates while watching porn downloaded from the internet.
Tom: Hey Dick! How come your spunkbubbles are bigger than mine?
Dick: Practise dear Tom. Practise makes perfect spunkbubbles.
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...
Meerkat: You want to talk about this privately later?
Hawko: I ain't really got a lot to say, I was taking the piss, I just think your a complete spunkbubble
When she is trying to fart cum out of her arse and it bubbles up !
Rode her ass like a jockey and then she blew a chocolate spunkbubble at me !