Willian had football fans in stitches on Wednesday night when he confusedly walked out of the tunnel during the half-time interval in Chelsea's 2-0 win over Tottenham.
The Brazilian looked spellbound as he made his way up the steps to return to the Stamford Bridge substitutes bench.
Football fans took to Twitter to poke fun at the bewildered Chelsea star.
One person tweeted: 'Willian definitely left the iron on ...'
While another fan posted: 'Willian has absolutely no idea where he is.'
One person humorously commented that the 30-year-old was having 'flashbacks of playing against Manchester City' in the 6-0 thrashing at the Etihad Stadium in February.
Willian was introduced just three minutes after Pedro had given the lead at Stamford Bridge as Chelsea condemned Tottenham to their second consecutive defeat.
The Brazilian was involved in another bizarre incident as he allowed Kieran Trippier's calamitous backpass to roll into the net with six minutes remaining.
The victory leaves Chelsea sixth in the Premier League on 55 points, although they have a game in hand over all five teams above them in the table.
