The Foxes had looked on course for a third straight win in all competitions at home to Spurs on Wednesday night as the match entered its final minutes.
Brendan Rodgers’ side were in league action for the first time in 2022 and led 2-1 going into added time thanks to goals from Patson Daka and James Maddison.
However, two goals in 80 seconds from Spurs substitute Steven Bergwijn grabbed victory from the jaws of defeat for the visitors.
Those late goals were a crushing blow for the Leicester players, but perhaps none more so than Soyuncu due to his antics just seconds earlier.
Mere moments before Bergwijn scored his first goal to level the score at 2-2, Soyuncu was seen taunting the Dutchman inside the Leicester penalty area.
Soyuncu stood over Bergwijn and bent over to shout at the former PSV man as he laid on the turf following an unsuccessful Spurs attack.
The Turkey international would soon regret his attempt at being a s***house, though, as Bergwijn had pulled Spurs level before the 95th minute was over.
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He lashed the ball home from close range after Soyuncu’s clearance ricocheted to him off Matt Doherty.
Then, with further time added on due to his first goal, Bergwijn latched onto a through ball from Harry Kane to round Kasper Schmeichel and score the winner in the 97th minute.
To make matters worse for Soyuncu, he was left in a heap on the floor in the Leicester goal after backpedalling in an attempt to clear the ball off the line.
Bergwijn’s future at Spurs has seemed up in there so far this month, with reports of strong interest from his native Holland, namely from Eredivisie champions Ajax.