The thumbs monkeys have on their feet so they can climb trees.
I've never heard Brachydactyly type D get called a "toe thumb" before. Toes do not look like that. Average people's thumbs look more like toes than thumbs with Brachydactyly type D.
Monkey feet are so cute! Look at its little toe thumb.
My toes do not look like Megan Fox's thumbs. She has baby thumbs. Not toe thumbs.
1. (n.) When your thumb gets semen all over it after a person (typically male) masturbates
2. (n.) A person with a lot of experience in masturbating
1. "I had a White Thumb last night after I masturbated"
2. "I've been masturbating for so long I have a white thumb
When your thumb becomes swollen for days from playing so much Super Smash Brothers with the boys
“Dude my thumb is sore as fuck from playing smash brothers last night”
“Ah yes, good ole Smash Thumb....give it a few days, it’ll heal
The ability to make plants die.
The guy has been growing things since he was a little fucking kid, he doesn't have a red thumb. Not all his plants die, and none die without cause or due to neglect. He takes good enough care of his plants, and though people can at least question his sanity, maturity, and responsibility (unlike some other people), there isn't anything about him that indicates he is an irresponsible person by nature.
Being aggressive with a situation
Lisa stick your thumb in the orange and tell him that you’re tired of being used.
A thumb plumb is when there is a lump of shit left on the thumb after thumbing an arse.
Holy shit, you should have seen the size of the thumb plumb she left.