Dirt

Pat, my father-in-law, was helping me measure out the space needed for the playyard in the backyard. When the dirt guys come I wanted them to see it.

Sean and Ryan and Andrew spent that time playing in the backyard/dirt, while Alex helped us. After we'd finished, we looked at the 3 youngest and discovered dirt in their hair. Sean had so much dirt in his hair that while his head sweated, the dirt was turning to MUD.

They each got an immediate bath.