 The show uses catchphrases , and most of the primary and secondary characters have them . Notable expressions include Quagmire 's " <unk> giggity goo " , Peter 's " Freakin ' sweet " , and Joe 's " Bring it on ! " The use of many of these catchphrases declined in later seasons . The episode " Big Man on Hippocampus " mocks catchphrase @-@ based humor : when Peter , who has forgotten everything about his life , is introduced to Meg , he exclaims " D 'oh ! " , to which Lois replies , " No , Peter , that 's not your catchphrase . " 
