From what I recall, Frank gets all slimy and stuck in a couch, Charlie tries to kill a mall Santa, and Mac has some existential crisis about his shitty childhood and the gifts his father may have stolen from other kids to give to him. It's like an Andy Williams record, this episode. All warmth and cheer and hot toddies made with well vodka and roofies.

It's Always Sunny in Philadelphia airs on FX tonight at 10 PM, opposite The Real Housewives of Beverly Hills (Bravo) and Burn Notice (USA). Holiday sparsity in full effect.