The 14-year-old named Megan -- who has progressive metastasized sarcoma and lives in Florida -- met the "Work" duo last week backstage at Riri's concert through the Make-A-Wish program, according to the foundation's rep. "BEST DAY OF MY LIFE! I MET THE LOML ----," Megan wrote. "He was so sweet & down to earth. Gave me and my family some OVO clothing. BEST DAY EVER. NO LIE. ------?-- @champagnepapi LOVE YOU!"