This is a brilliant one!!!
As we should have hope and educate newbies - some are maybe just new and do not know everything about the thing called SPAM - i would go with that:
However my first reaction (i know the issue from other places that got killed by spammers) was to go with that here:
The koala!!! That was also me the first time that happens in one of my posts ;) But was not so often to get to the second one ;) lol!