A musical boner. Getting excited/aroused because someone has the same music taste as you do. It's even better when they are as into the band/song as you are.
Dillan likes the same band I do. Hearing him tell me about his favorite lyrics gives me such a toner.
Toners ever growing boner, Toner is a nickname for THE tony. Toner is Regina George incarnate and is the best and hottest you will ever meet, he will eat you alive.