Kept on the farm

• Housed like a pig
• Confined to a pig pen
• Confined to a pen
• Kept in a pigpen
• Penned, as pigs
• Like a pig in a pen
• Put in a piggery
• Put in a pen
• Cooped up at Old MacDonald's

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Sty \Sty\, v. t. [imp. & p. p. Stied ; p. pr. & vb. n. Stying .] To shut up in, or as in, a sty. --Shak.