Top definition
The sticky slim residue from having a thong on too long nestled over the cunny lips absorbing all those juices then forming a nice layer of butter.
"Jim" Dude Becky had her thong on way to long yesterday, went to go down on her last night and she had a good layer of thong butter in them!. I bet you enjoyed that dude, mmm yeah pure goodness you know it!
by Thong lover October 01, 2009
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