United Kingdom, May 9 -- Maren Morris suffers from "mom brain".

The 35-year-old singer - who has a five-year-old son called Hayes with ex-husband Ryan Hurd - has revealed that she's still battling so-called mom brain, which is a phrase used to describe postpartum forgetfulness.

Maren told People: "I have pretty good recall for, like, movies and years they came out, but I have to have a teleprompter onstage at shows because I might forget all my lyrics if I don't.

"It's a security point. I could do it, but I would be having an anxiety attack the whole time."

Maren loves the challenges of motherhood, and she actually finds her son's brutal honesty to be amusing.

The 'Girl' hitmaker shared: "Five-year-olds - don't ask them anything that...