Watford manager Walter Mazzarri admitted that he forgot to shake the hand of Stoke City manager Mark Hughes following his side's 1-0 defeat at Vicarage Road on Sunday.
However, the Italian claims that his forgetfulness was inspired by the actions of match referee Bobby Madley who he felt cut the game short.
"I was very angry at that moment with the referee and the time he gave at the end," said Mazzarri.
"I went into the dressing room and gave Mark my hand. I forget in that moment.
"But I was angry with the referee for not giving a lot of time and the decisions he gave. You have to look at the whole game; the fouls, the goal they scored and the yellow cards.
"Anyone can have a bad day. And this time he had a bad day."