The Big Bang Theory Episodes :- The Financial Permeability

In Season 2 Episode14 Sheldon tries to help Penny with her financial problems with the help of a simple solution that end up in a confrontation between Leonard and Kurt, Penny’s ex-boyfriend. Sheldon lends Penny some money to pay her rent and she then becomes anxious about not being able to repay the loan to Sheldon. As Leonard tries to solve Penny’s financial issues, he learns that Kurt owes her $1800 and when he goes to Kurt’s house to collect the money without informing Penny, he ends up getting “I owe Penny $1800…Kurt” written on his forehead. Later, Kurt pays back the money he owes Penny without telling her about Leonard’s visit and she in turn pays back Sheldon’s loan amount and agrees to go out with Kurt for a dinner.