Saka scored the third in the Gunners’ 3-1 win at the Emirates as he lobbed the ball over Mendy and in off the post.
The teenager was adamant that he meant to score, despite others claiming he meant to cross the ball into the box.
And his England international team-mate Jack Grealish even joked that Saka was lying about the goal, saying: “ur to funny man! Liar,” with a series of laughing faces.
The two continued their back-and-forth during a Rob Holding Instagram live session.
After spotting Saka in the comments section, Grealish wrote: “Bukayo stop lying saying u meant to chip the keeper”.
The Arsenal winger was quick to reply, saying: “Bro I saw him off his line.”
Grealish again responded, replying: “B your too funny man,” with a laughing emoji.
Saka continued his impressive form against Brighton on Tuesday night, though was forced off with ten minutes remaining after dribbling the length of the pitch to assist Alexandre Lacazette for the winning goal.
The winger was swapped out for Dani Ceballos after suffering a knock, but Mikel Arteta insisted he believes the youngster will be alright, saying: “He was limping. He took a strong challenge but hopefully he will be okay.”
Saka’s impressive form has seen him touted as one of the best youngsters in the country, and Arteta backed him to continue his growth and develop at Arsenal.
“I would like everybody to be cautious and let him be and let him develop. I think he’s having the right progression,” he said.
“I think he’s got the right people around him in his house in his entourage. And then he’s got the right teammates as well to support him all the time, give him confidence, keep his feet on the floor, but as well to give him support and confidence. And then hopefully we can be the right coaches around him, be the right club to see the player that he can be in the future.”