The Manchester City defender, who is now sidelined with a knee injury, posted a short video of himself on his Instagram account in which he seemed to tag himself in at Hong Kong International Airport.
"Wow. I didn't know it".
Guardiola replied, "Well before, he said "I'm going one day to Paris".OK, but Hong Kong is far away". I don't know. I have to install Instagram. F*** he is a lucky guy.
But he later uploaded a video in a auto with the location set as Hong Kong International Airport, something which prompted Guardiola to swear on live television after he was questioned about Mendy's whereabouts in a pre-match press conference.
The World Cup-winning defender is now out of action following knee surgery and he's featured just once for the reigning Premier League champions since November.
When asked whether the trip was planned, Guardiola - who believed Mendy to still be in Barcelona - responded: "Wow".
That came as a shock to Guardiola, however, who had granted the France global permission only to go to Europe.
He said: "I was joking with my Uber driver".
Mendy has only made nine Premier League starts this season due to injury and Guardiola remains unsure when the 24-year-old will be back.
"Mendy is injured and it's not easy".
This is the last time City will play after Liverpool before their title rivals get to go second in a month of Sunday games in March. Meniscus. It is not easy. 'He needs to re-adapt.
"You can't return and train for two days and you are fit".
The former Barcelona boss warned the full-back in August that he needed to forget about the internet and focus on his football as he looked to put an injury-hit first season with the English champions behind him.