What is Thumb Butter?
1.
When your wiping yourself and your thumb accidentally breaks through the toilet paper and gets "dirty".
Dude! I dropped the kids off at the pool last night and got covered in thumb butter when I was wiping with that cheap paper my wife buys!
Awww man that is the worse!
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1.
A very common mistake among gossipy and gullible teens. Its just making assumptions based on snooping people's facebooks, Such as ..