`` Lying Is the Most Fun a Girl Can Have Without Taking Her Clothes Off '' is the fourth single by the rock band Panic at the Disco , from their album , A Fever You Ca n't Sweat Out . `` Lying Is the Most Fun a Girl Can Have Without Taking Her Clothes Off '' is a single by the alternative rock band Panic ! at the Disco , from the album A Fever You Ca n't Sweat Out .