Irish comedian Joe Heenan also saw it and it inspired him to make one of his own - but his was infinitely more positive.
In it, he invites people to feel welcome to come hunt Pokémon in his garden and tells people not to let the ’bitter killjoys’ spoil the fun.
It reads in full:
"This is a private garden but if you see a Pokémon in here, come and get it. Enjoy life.
"This whole Pokémon hunt is by far one of the best things I have ever seen. Don’t let: bitter killjoys, people with no imagination, folk that hate fun, members of the Conservative Party, angry dads, Donald Trump tell you otherwise.
"This is awesome! Now go and catch as many f*cking Pokémon as you can."
And with the weather the way it is, we’re inclined to agree with Joe!