What is Goodin?
1.
A Southern method of wishing one well upon parting.
Far South: "Yea'ins ave a goodin."
Mid South: "Ya'all have a goodun."
North: "You guys have a good one."
See
2.
The licking of one's balls in order to drive another's car.
"Dude, he total gave me a Goodin to drive my shitty ass 240 around the bllock.
See
3.
Alec Goodin is a weird little kid that laughs at anything
you are a stupid goodin