During a recent appearance, an audience member asked Simu if he knew Tom personally — and in response, he actually tried to give him a call while on stage!
While Tom didn't pick up, Simu did reveal that Tom left him a really nice message after the premiere of his Marvel flick.
"He's not picking up. Can I play you a voice memo that he left for me once?" Simu asked the crowd.
When they responded with cheering, Simu held his phone up to the mic and told the young audience they had to stay pretty quiet.
"Dude, I just watched Shang-Chi bro, that film is so fucking awesome," Tom could be heard saying.
The crowd went wild and Simu wrapped up his speech with the hilarious lesson he learned from all of it.
"So I guess the lesson is: work really hard and follow your dreams and maybe one day Tom Holland will watch your movie and leave you a voice memo," Simu joked.
Watch the entire event and Simu's speech (starting at 1:53:00) below...