This is the result caused when a man has not ejaculated in over 24hrs. As he tries to hold back his batch during intercourse or masterbation, the sunami brewing in his sack is so thick and rich it feels like butter is churning in his balls. Upon release, unloaded like a strike of rolling lightning, the man cannot help but let out the loudest groan which sounds like thunder when combined with the banging of furniture when someone hears it from another room or outside.
I've been stuck with the kids all week so last night when me and my girl were finally alone, I pounced that pussy like Zeus in a lightning storm and unloaded my thunder butter deep in her pussy, so loud the neighbors thought it was storming outside and she wanted to change her name to Jezebel after enough cum from a gang bang dripped out of her pussy. There was enough to make toast for the whole neighborhood.

That guy needs to get laid more. My wife is getting excited every time she hears the neighbor release his thunder butter.
by Sean Day Lou Swahili Swag September 4, 2016
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This is when you vomit on your own dick and then stick it in her.
Dude was so drunk he accidentally gave her the buttered thunder.
by CFSamwise December 14, 2009
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