A small finger. It is precisely measured to be 1/3rd the size of a traditional finger.
Person 1: "Why do you always need two hands to text?"
Person 2: "Idk man I can't reach across my phone with just one hand, also I lose balance."
Person 1: "Damn, I guess you have fingies..."
And dying in yo' bed many years from now, would ya be willing ta trade all da days from dis here day ta dat fo' one chance, just one chance, ta come back here as young men an' tell our enemies dat dey may take our lives but dey will never take our freedom ... YUB NUB!