 Jenna Fischer noted that , due to the presence of actual children on the set , " everyone had to be on their best behavior " , meaning that there was no " cursing and no dirty jokes allowed " . She later said that " we aren 't a ' G @-@ rated ' bunch by nature . " Fischer later joked that " candy is one of my weaknesses " , but she was able to get through the filming of the episode without eating any of it . She explained that during the filming of the earlier second season episodes " Halloween " and " Valentine 's Day " , she had eaten a majority of the candy the crew put on her desk . 
