"I've just woken up. It's four o'clock in the morning," the unidentified fan says in the video showing rows of empty seats behind him at the stadium in Gelsenkirchen where England won 1-0 in their opening game on Sunday night.
The video, viewed hundreds of thousands of times, prompted laughter among fellow England supporters, though some questioned how security had missed the snoozing fan and also why the lights were still on in the early hours at the stadium.
"This is what happens when you watch Sleepy Southgate ball!" quipped one poster, referring to coach Gareth Southgate's team's less than scintillating second half performance.
