Try love bite. I didn't finish it cause it was frustrating for me, but you might enjoy it.
Ok thanks i will
Not a 100% sure about these but they're the only ones that came to mind
http://www.mangago.me/read-manga/jawbreaker/
http://www.mangago.me/read-manga/kuchizuke_wa_uso_no_aji/
http://www.mangago.me/read-manga/a_physical_education/
http://www.mangago.me/read-manga/sweet_heart_trigger/
http://www.mangago.me/read-manga/nigai_no_theme/ (they switch but they're both trash so it fits your criteria anyway)
Wow thanks
So is there any recommendations for trashy ukes? I need a change od taste and normality