Toph spits on her foot
and toph said "Now, you need to lick my foot in the same place where i spat"

Naruto did'nt know what to do, he was thinking for a moments,
he was thinking to do, to see if they could do it or not, that looked the spit in the dirt foot of Toph, near the foot of his tongue and started licking Toph's feet. In the sense that their language viscous fluid next to the salty taste of Toph's foot, with all the dirt that she dragged her feet in.

Toph laughed, "Hahahaha, Do not have a very delicious flavor?"

Naruto was almost to cry, he felt that the phlegm running down his throat and the sweat from the foot of Toph, This is felt strongly in a filthy, saliva, dirt, grime from their filthy feet, with an odor that would be difficult to explain.