Sitting down with BT Sport ahead of the clash in Prague, the duo were asked to perform their best impersonation of ex-teammate and now sporting director Noble.
Through laughter, Soucek said: "I would say, 'come on Tom.'"
But it was Coufal's impression that has sent social media into a frenzy, as he remarked: "I'm incredibly proud of you."
Supporters were loving it, as one West Ham fan Twitter account posted: "Coufal with his Jar Jar Binks cockney accent."
READ MORE ON WEST HAM
Fiorentina fans arrested as video shows West Ham fans being 'attacked' with weapons
Bus celebrating West Ham winning Europa Conference League spotted before final
Another quipped: "Sounds like Chris Eubank."
A third added : "Coufal with a belting Bane impression."
Another said: "Better than the accents in Green Street."
Meanwhile one joked: "Didn't know Noble sounded like Gollum."
Most read in Football
How to watch West Ham vs Fiorentina for FREE in Europa Conference League final tonight
Chelsea transfer news LIVE: Kante nears Saudi move, Colwill may be used in Caicedo deal
Real Madrid to sign Bellingham, Messi set for Miami, new bid for Man United
Ex-West Ham boss keen on becoming next Celtic manager after Postecoglou exit
Coufal and Soucek will be returning to the Fortuna Arena for the Europa Conference League final - the home of their former side Slavia Prague.
Commenting on his emotional return to the ground, Coufal said: "It's going to be a very special game and a very special night, playing in my home stadium where I know every corner.
"Hopefully it'll be an advantage for me and Tom, and all the guys. We spoke about the stadium already and I hope to add one more win there.
"We're playing in the national team there and I dreamed about taking the whole West Ham team to Prague but I didn't know it would be a final.
"Hopefully, it'll be good memories from Prague. With the national team, we beat England in this stadium, so a perfect memory.
"Also, we were promoted to the Champions League in this stadium and played Barcelona, Dortmund and Inter Milan in this stadium.
"I won three Czech titles in the stadium and also Czech Cups. So lots of good memories. But I hope the most important one is coming.
"If we win, 100 buckets [of Czech beer] is not enough. But it's very early to speak about celebrations."