A gay emo band in which it's fans insist that they are not emo, but the band members where eyeliner, dress-up in all black, cry about stuff in their music, and typically (but not always) has one or more bisexual members. Definition of an emo band.
Some good examples of eyeliner bands:
30 Seconds to Mars
Fall Out Boy
Bullet for my Valentine
Pretty much all the bands that emo teenagers like.