Here’s a Rocky and Bullwinkle Cheerios ad doubling as an anti-one-man band PSA (or vice versa)

Let this ad serve as a warning: playing multiple musical instruments at the same time, with Cheerios or without, can put you in goofy peril. Granted, Bullwinkle has managed to jam himself into a basketball hoop, so he might not be the most instructive sample. Nevertheless, the danger remains. Neil Young, watch your step.