 Chandler sleeps with Rachel s boss Joanna. Rachel makes him end it. Monica needs money so she agrees to cater her mother s party. Monica loses a fake fingernail in the quiche. Monica s mum bet with her dad that Monica would screw up. Chandler goes to break up with Joanna but ends up being handcuffed to the chair in her office half naked. Rachel has to uncuff him because Joanna is stuck with her boss and isn t coming back. But Rachel has to cuff hi back the way he was otherwise Joanna will know Rachel was in her office. Monica impresses her mum with a wonderful dish for her guests after all and they finally get along.