The obnoxious special effects , the obligatory outbursts of flatulence and the incessant , so-five-minutes-ago pop music on the soundtrack overwhelm what is left of the scruffy , dopey old Hanna-Barbera charm .
The obnoxious special effects, the obligatory outbursts of flatulence and the incessant, so-five-minutes-ago pop music on the soundtrack overwhelm what is left of the scruffy, dopey child Hanna-Barbera charm.