A feeling that you get when you forget to do your hair in the morning or wear old clothes.
"How does your character act when he feels inadequate?"
"When he is bomstyle."
"What's 'bomstyle' mean anyway?"
"Joo know dat feelin' joo get when joo don't do jour hair in de mornhing? Or when joo wear old clothe? Dat's bomstyle."
"Okay...how about you just tell me how you act instead?"
"Oh...I act bomstyle."