Shucks

Shucks! It was too good to be true.

Ah, shucks! My horse lost!

"May I guess what you were just eating?" "Huh?" "You were eating chocolate, weren't you?" "Yeah." "You've got some on your clothes." "Aw, shucks..."

He shucks corn by hand.

Shucks. It's too bad you can't make it to the party.

Aw, shucks, ma'am, catching those wild horses was easy.