A word commonly used (by some) to describe the following
Often a "howner" will sing his/her little emo songs in a whiney voice.... causing the audience to subtley put their fingers into their ears....
Or... an insult. For anything.
*emo kid sat in the corner with an out of tune guitar singing*
Howner: (singing) "swwwwiiinngliifeeeaawwayyy"
Others: "oh my god... stop being such a howner"
or..... "OH my god... stop howning"
*at someone* "you howner"