During the conversation, Matthew was asked if he’s seen the photo going around of the 22-year-old singer reading his memoir.
And that led the actor to share his thoughts on Shawn — whom he called "a good young man" — and the fact that they've been in contact for a while.
Matthew, who is married to Camila Alves, also mentioned that his kids — Levi, Vida, and Livingston — seem to be fans of Shawn himself: “I know my kids have seen him and know his music and et cetera,” he told ET.
And so, the funniest — and cutest — thing is how Matthew's kids reacted when they found out their dad has Shawn Mendes' ACTUAL phone number:
Matthew then shared their panicked reaction when he offered them an opportunity to call him:
A very cute reaction that can be summed up as this:
But hey, I'll admit, I'd probably have the same reaction.
You can watch the clip of Matthew McConaughey talking all about his kids and Shawn Mendes here: