Tottenham boss Mourinho taunted his former player with a cheeky dig as tempers frayed on the touchline during a feisty clash at White Hart Lane.
Chelsea manager Lampard was up off his seat throughout the game and that seemed to wind up Mourinho after his side went behind in the first period, through Timo Werner’s clinical strike.
Mourinho said: “F*****g hell Frank, when you’re losing 3-0 you’re not standing up here.”
That was a dig at Lampard after his side trailed at West Brom on Saturday before fighting back to draw 3-3 at the Hawthorns.
Mourinho then made gestures with his hands that Lampard was talking too much as their old friendship turned into fierce rivalry.
There was no love lost between the pair who were incredibly close when Lampard was a huge part of Mourinho’s success during his glory days of winning titles and trophies at Stamford Bridge.
It wasn’t the only interesting moment involving Mourinho during the London derby, with the Portuguese also dashing down the tunnel after Erik Dier during the second half, when the England midfielder headed to the toilet.
Lampard has history for touchline bust-ups after a X-rated exchange with Liverpool boss Jurgen Klopp and his coaching staff when Chelsea lost at Anfield in July.
Former England midfielder Lampard claimed afterwards that Liverpool’s bench had been a little “too arrogant.”