It's hard to put it any better than Karina Barker of Ramsgate, Kent, who spotted this and posted it to Twitter:
I don't know who has bolted Welcome mats to the UKIP poster down my road, but you are a genius and I salute you. pic.twitter.com/q2JYZiz8bW— Karina Barker (@posiekins) April 17, 2015
Yes, some bright spark has taken it upon themselves to hammer 'WELCOME' mats to a Ukip poster in South Thanet - the place where Nigel Farage is standing to be an MP in the general election.
Whoever you are, we applaud you. Because you've produced the greatest act of Ukip poster subversion we've seen since this little lot.