Hilarious episode. Jess's divorced parents come over for Thanksgiving and she is trying to get them back together. Once he figures it out, Jess's dad says: "You're doing the Parent Trap thing again."
Jess: "Dad, I have a master's degree, I'm not Parent traaaaa......"
CC to Schmidt: "You need to go home and change, Schmidt. I know you have more costumes in your closet."
Schmidt: "Those costumes are for Purim. And Purim is in March."
I don't know why that one made me laugh, but I guess Schmidt having costumes for Purim just strikes me as funny. And there wasn't much to choose from this time.