Calling all Movember men. This bearded man is imploring you, "Let it Grow."
It goes without saying, but yes, this is a parody of Idina Menzel's "Let It Go" from Frozen.
The lyrics of the song are full of those so-bad-they're-good slant rhymes that are popular with Top 40 parody. A lot of options to choose from, but a memorable line would be: "Let it go, let it go/I'm one with Gandolf the White/Let it go, let it go/You'll never see me slice."
Cute beardy guys and Movember fun abound, AFTER THE JUMP…