Help with plant ID

[Band Saw Box]

We have this plant come up in an old planter in our back yard. We have no idea of what it is or even were it came from. We are hoping some one here might know what it might be. It does have small yellow flowers if that helps. Thanks

 

[JP61]

Watermelon plant?

 

[nativewooder]

It will probably be good to eat! Looks like you need some stakes for it to climb. Could be any kind of melon or squash or beans.

 

[Cmiles1985]

Watermelon for sure.