Her poorly-timed participation in the wave was met with a mixture of criticism and amusement on social media.One viewer said: “How can Theresa May lead Britain if she can’t even do the Mexican wave properly? What a mess.”Another said: “Theresa May also put more effort into that Mexican wave than she did for her entire election campaign.” Mrs May’s timing was poor with the Mexican WaveCredit: Matthew Impeu/Rex The international game saw crowds singGod Save The Queen and observed a minute’s silence in honour of the victims of recent terror attacks in the UK.The gesture of solidarity comes after English football fans sang the French national anthem at Wembley following terror attacks in Paris in 2015.Earlier Mrs May and Mr Macron gave a joint press conference, in which the French president said “the door remains open” to the UK remaining in the EU but he wanted the negotiations to start “as quickly as possible”. Theresa May has been caught on camera participating in a Mexican Wave.The Prime Minister attempted to join in with the crowd as the wave swept towards her at the France v England friendly on Monday night, but found herself left behind.Mrs May was at the game at the Stade de France with French president Emmanuel Macron and Home Secretary Amber Rudd. Theresa May doing the Mexican Wave was the worst decision she’s made since calling a general election.— Ryan Witt (@RyanTheGrecian9) June 13, 2017 Theresa May joins thousands of people in a Mexican wave. Only she could make it look like she’s doing it by herself. pic.twitter.com/RlBt3Ldltz— Ben Kentish (@BenKentish) June 13, 2017 I must have watched Theresa may do the Mexican wave a hundred times. I’m currently laid in bed crying. I’m so easily amused 😂😂😂😂— Amy🌵 (@FowlerftBoyle) June 13, 2017 France 3 England 2Highlight of the night has got to be Theresa May doing the Mexican Wave 😂😂— Craig Flaherty (@CTFlaherty) June 13, 2017 Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings.