Troy Deeney defended his provocative celebration in front of the West Ham fans during Watford's 2-0 win at the London Stadium.
Hornets skipper Deeney, 30, put the Hornets ahead when he hit home a first-half penalty before charging towards the corner flag.
The striker attempted a knee slide before punching the flag out of the ground and goading the home supporters, one of whom threw a paper cup at him.
Deeney explained: "Forget the knee slide where I nearly broke my knee. People have an opinion on me and my family and that's the only way I can shut them up."
Gerard Deulofeu added the second three minutes from time to lift Watford to seventh.
"It was a tough game," Deeney added. "We were more clinical and more ruthless in a great away performance.
"Games like this are nice to win but it's nothing too serious. We've got Chelsea in a couple of days. Everyone will enjoy Christmas with families and then we go again."
Defeat meant an end to West Ham's four-match winning run, although they were unlucky.
Michail Antonio hit the woodwork twice, Javier Hernandez blew a gilt-edged chance and Robert Snodgrass was denied by a stunning save from Ben Foster.
"It's bitterly disappointing because we've hit the bar, hit the post and their keeper has pulled off unbelievable saves, so it's one of those games," said Snodgrass.