guys does ANYONE know any funny mangas like 19 days and such..

Yeah! Here one that's pretty similar:
http://www.mangago.zone/read-manga/18_unlimited/

hate mate

hi! try these for comedy:
http://www.mangago.zone/home/mangalist/797947/?filter=&page=1
http://www.mangago.zone/read-manga/tou_tiao_dou_shi_ta/
http://www.mangago.zone/read-manga/i_m_a_middle_schooler_becoming_the_demon_lord/
http://www.mangago.zone/read-manga/kage_no_jitsuryokusha_ni_naritakute/
http://www.mangago.zone/read-manga/gekkan_shoujo_nozaki_kun/
http://www.mangago.zone/read-manga/19_days/
http://www.mangago.zone/read-manga/im_the_main_character_of_a_harem_manga_but_im_gay_so_every_day_is_hell_for_me/
http://www.mangago.zone/read-manga/the_new_book_s_counterattack/
http://www.mangago.zone/read-manga/super_seme_sama_to_toki_wo_kakeru_ore/
also suujin's list is really good and has what you want:
http://www.mangago.zone/home/mangalist/717570/

Omg thanks