The film contains a number of adult themes, such as:
The Cat begins to explain to the children where babies come from before being cut off by Conrad.
The Cat sings a song about a cat back home where he was bred who never listened to his mother and was finally taken to a vet and was neutered. He sings the line as "...to cut off both his ba... ba... ba..." and cuts off by saying "Boy!". (In a deleted verse, which is included on the film's soundtrack, the Cat sang about a know-it-all cat who liked to be the "teacher's pet" and sings the line "...it took a ton of TNT to kill the bug up her a...a...a..." and cuts off by saying "Ask me...".)
When Lawrence is at home relaxing on the pile of messes, on TV, he is watching what appears to be a stripper dancing until the TV is repossessed.
When the Cat spots the photo of Joan he unfurls it centerfold-style, gets excited saying "hubbata hubbata" and his hat extends. It is revealed in a deleted scene that the photo of Joan featured her in her underwear.
When the Cat cuts his tail off he yells out "SON OF A BI..." before it's bleeped out and the broadcast is terminated, followed by a cat on a rope with a whistle version of "The Girl from Ipanema".
After the Cat unsuccessfully tries to capture Nevins he 'talks' to the hoe he is holding, calling it a "dirty hoe" and then apologizing with "I'm sorry baby, I love you", finally proceeding to lick it.
The acronym of the Cat's car's former name is S.H.I.T. (Super Hydralic Instantaneous Transporter) which Conrad is about to say before the Cat cuts him off, saying "Oh! Quick to the SLOW!"
just goes to show how great our childhood was....