Calimero is just dirty:
https://www.youtube.com/watch?feature=player_detailpage&v=BlM--m-AELY#t=34

Here he gets clean again:

https://www.youtube.com/watch?feature=player_detailpage&v=BlM--m-AELY#t=107

https://www.youtube.com/watch?feature=player_detailpage&v=A6iPaRVlS0M#t=102

https://www.youtube.com/watch?feature=player_detailpage&v=RmtWhPzRBx4#t=102

https://www.youtube.com/watch?feature=player_detailpage&v=SikQnKA6EAM#t=101

https://www.youtube.com/watch?feature=player_detailpage&v=qkRx3eOGP1k#t=99

As you can see: nothing new under the sun: if something is dirty, you wash it.

We already knew that fifty years ago.