According to Danny Tamberelli , Little Pete's famous arm tattoo, Petunia, was achieved with an adhesive patch. However, when supplies of the stick-on began to dwindle, they advised Tamberelli to protect the adhesive from water during shooting periods. Eventually, the producers began applying the tattoo with a stencil. See more

Goofs

Little Pete's forearm tattoo, Petunia, is important enough to get her own identification ("and Petunia") in the opening credits for the show. Apparently, Petunia likes to travel. In early episodes, she is on Pete's left arm, in later episodes on his right arm. In the opening credit sequence, during her main appearance she's on his left arm, and in the very next shot, when Pete and Pete are walking toward the camera with a sunset in the background, she's on his right. See more