Luke grabbed the filthy coveralls. They smelled bad, like pee and manure and sweat, but he figured the kid who wore them would be pretty fit. As he slipped them on, he felt mildly itchy for a moment, and then gasped as he got bigger. The clerk chuckled when the change stopped. Luke was tall and skinny, the coveralls still bagging on him like a hand-me-down from some older brother. Looking in the mirror, he was dismayed to see a slack-faced boy of maybe 14, his mouth hanging partly open to reveal crooked, scummy buck teeth. His hair was a matted brown tangle, with big ears, a pug nose, and his lower face protruded out while his forehead was low and sloping back. He looked like a cave man farmer - a dimwitted cave man farmer. Or Farm boy. Luke grinned, the expression making him look even dumber. "Where did you dig up this yokel? I look like I should be shoveling cow manure or slopping pigs!"
The clerk said "That's a genuine antique! From about 1900. I can send you lots of places as a worker. Even back to 1900 if you want to see what it is like."