This is just some silly humour: The German word Knallfrosch means firecracker but literally it says "exploding frog" or "frog with a bang". So if you do a search here for "dynamite", you will see where this one is coming from. Kaboom, enjoy.
Knallfrosch free icon was designed by The Martin for icons Png and presented to its users.
The Martin
2/28/2018