look up any word, like bae:
 
1.
a cocky, self-centered, over confident male who participates in band. Often thinks he is popular and a ladies man. Sometimes may actually be quite talented, but usually just egotistical.
"Wow, Tim always gets so pissed off when the jazz band messes up"
"Yeah he is such a bandbag"

"Tim always dates the colorguard girls, fucks them, then dumps them."
"He is the biggest bandbag."
by imtheoppositeofbasic February 04, 2013