The concept is simple and I like the tongue sliding mechanic. And racing the other frog (I think).
There seems to be no gravity though and you can just easily fly up rather than jump.
I will be blunt here, the graphics and especially the audio are abysmal. These definitely need to be worked on. Although the character images are wacky and weird I like them. I'm not sure if you made those yourself.
I don't know how the theme fits