Singer Mandy Moore explains the bizarre reason she has a sperm tattoo inked on her foot.

American sweetheart Mandy Moore has explained why she has a cartoon sperm inked onto her foot. Previously we assumed the answer was one of three things: bad idea, bad bet or bad bet idea.

Moore, 32, told late night show host Seth Meyers the ink was to commemorate a running joke she had with her tour mates.

“Well, about 10 years ago, I was on tour with my band,” she said. “When you go city to city, you’re in a bus, but you get a day room. And I was the only girl so I had my own room to shower in and all of the guys in my band shared a day room. Their one rule was nobody was allowed to do that thing in the shower.”

via GIPHY

Moore went on to explain how the shower situation morphed into an ever growing in-joke.

“It became this big joke, because one of my band members was like, ‘I don’t want babies on my feet.’ And so we created a song called Babies on My Feet that we sang on stage every night. No one had any idea what we were talking about,” she said

A photo posted by Mandy Moore (@mandymooremm) on Jun 22, 2015 at 1:23am PDT

The actual tattoo was inked after the tour finished and the friends decided to give themselves a permanent reminder. The Candy singer went on to say how her wiggly friend has not always received a positive reaction.

“Right after I got it, I went and got a pedicure and the woman was like, ‘Honey, I’m trying to scrub this off and it looks like permanent marker,’ and I was like, ‘No, no, that’s a tattoo and it’s not going anywhere,’” she said.

Awkward.