Life In Pieces brings two pop culture giants on board for its Valentine's Day episode, with Josh Groban starring as an attractive guitar salesman who keeps making advances on Clementine (Hunter King) right in front of Tyler (Niall Cunningham), and Kat Von D as - what else? - a tattoo artist named Lois.

It all starts so nobly: Tim (Dan Bakkedahl) goes to Lois to get some cool new ink as part of a Valentine's Day surprise for Heather (Betsy Brandt). But, thanks to a miscommunication, things don't go as Tim had hoped, and his tattoo turns out to be a really unfortunate, hilarious error. Check it out in the clip above.

Life in Pieces airs Thursdays at 8:30/9:30c on CBS.