One variation on the theme is that cereal has the power to solve various problems. For instance, it can soothe the savage beast. So when the Hulk finally decided to publicly endorse a cereal this was the obvious theme they ran with.
It was a beautiful 1970's day at the Honey-Comb Hideout. But trouble soon started when the Hulk showed up enraged from hunger. His main snack requirement was regarding size so the Honey-Comb Kids had to explain things to him:
It didn't take long for him to get on board and help himself to a heaping bowl:
So after enjoining his fair share of a complete breakfast he goes back from whence he came without so much as a "thank you." (Although he didn't kill anybody so I guess that's a plus.)
They are are left to do the dishes and change their crap-filled pants. You can witness the bizarre encounter for yourself:
It would be a few decades later before the Hulk would get his very own cereal. The 2003 Hulk movie produced an insane amount of promotional tie-ins, the best of which was Hulk Cereal:
It's safe to say that it was the best part of the movie.