When I figured out the above equation, that when a little boy says "Ewww, GROSS!" it actually means, "whatever disgusts adults and prissy little girls is awesome and inspiring", it was much easier to find things to thrill my 5 and 6 year old little boy.
(This equation of Gross = Cool is true to some degree for adult men as well, as proven by the fact that the three males in my household regularly bond over episodes of Dirty Jobs.)
Mothers, load this online coloring activity and impress the little guys in your life with the mid to moderate grossness factor.
The "eyeball soup" and the "eggs, bacon, and worms" are the favorites in our house.
The frog leg cupcakes got what I would call only a "mildly yucky" response from the boys:
(FYI: I found the page runs better in IE than in Firefox.)
Um . . . yeah . . . those pictures are kind of weird. Who thought this up? My 4yr hates to color, maybe he'll like this . . .