A sexual position where the thumb of either hand is used by a female to check her the pulse of her (usually male) partner, by inserting it in the anal cavity. Then proceeding to thrust it back and forth to match the heartbeat
by Polyester squirrel jacket May 20, 2021

My girlfriend wanted to sit on my face last night but she was on her period, so I gave her the Kentucky thumb and ate her ass instead.
by drunkfish45 May 20, 2021

A Sex Position involving shoving your thumb as far down a persons throat as possible. make sure to use a shirt for extra protection.
by John_Stamos_xxx May 20, 2021

When your spend some quality time with a lady partner and you have the overwhelming desire to stick your thumb in her butt while getting it on.
by Kentucky Thumb Master May 21, 2021

by potatoface28 May 20, 2021

-“How was your date last night?”
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“It was alright but the real fun started when she let me give her the ole’ Kentucky thumb”
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“It was alright but the real fun started when she let me give her the ole’ Kentucky thumb”
by BlazinBrazzin420 May 20, 2021
