(Self imposed) When a person does nothing but lay in bed all day, playing solitaire on his/her laptop.
Gentleman 1- "Hey, Bro-seph Campbell! You should come over to Kevin's place tonight; beer pong and best buds!"
Gentleman 2-"No can do George Bro-mero, I've been placed in solitaire confinement."
When you have no internet and all you can do all day long is play solitaire.
When Mom took away my network card, I was in solitaire confinement for a week.