According to Urban Dictionary there are two possible meaning for shucks. The first is euphemism for disappointment and the other is used to express modesty.
Cowboys loved a colorful phrase! The shucks are the husk of the corn, the part you toss away. Shucks were what cowboys called worthless people or things.
Shucks are the husks of the corn ear. People sometimes say "aw, shucks!" when they're slightly embarrassed. The implication is that they use that word instead of saying some other word starting with S that would not be as polite!
It is basically the equivalent of saying "Darn," "This stinks," or "Dang." I haven't heard anyone use the expression "aw shucks" anymore. They mainly will say one of the examples above or start cursing.
If you mean slang as in internet slang, then it means "Certified Old Fart".
The French exclamation "zut alors !" corresponds roughly to the English "shucks" / "shoot" / "holy cow" / "dang".
Garrett mean in cockney slang
Slang is slang It's the s' "LANG " uage.
In old slang, milkshake mean butt.
Cool itself, unless you are using it to mean mildly cold, is a slang word. Just because it is old slang doesn't mean that it is not still slang.
aw shucks
he means what does being a sponge mean in slang
It is slang for having sex.