Toad Suck and Mouse Tail Landing

One of the disadvantages of traveling from point A to B without having time to stop is not knowing the history of a particular item.  Who named a park Toad Suck or why is it called mouse tail landing?

While using the indoor plumbing in one of the fine places I stop, I observed the usual scribbles on the wall; however, this one caught my eye.  Someone had drawn male anatomy on the wall (not unusual), but this time it was, shall we say, uncircumcised.   A generation ago, the age group of the people who normally do this, would not have known what one looked like unless it was circumcised.  

Tonight I am in Knoxville, TN and will be at the Rcv by tomorrow afternoon.  Anyone's guess as to where I will be by this time tomorrow.