On Mr. Wilson's birthday, Dennis's attempt to give him a collection of pets—including frogs, snakes, and even a baby alligator—leads to George accidentally riding a wagon down the stairs and getting a cake in the face.
Seizing on George's insecurity about aging, two con artists—the Professor (Brian Doyle-Murray) and his assistant Sylvester (Carrot Top)—try to swindle George out of $10,000 for a fake "youth potion". Dennis the Menace Strikes Again!
as George Wilson (This was Rickles' final live-action film performance before his death in 2017) Betty White as Martha Wilson George Kennedy as Mr. Johnson Brian Doyle-Murray & Carrot Top as the villainous con men Critical Reception and Production Facts Dennis the Menace Strikes Again! (Video 1998) - IMDb On Mr. Wilson's birthday