iim putting together comedy-centric BL mangas, you might find a lot, and can go back to it. i know lots of hilarious but underrated and forgotten stories.
my current faves (individual review is inside my list)
http://www.mangago.me/read-manga/following_namsoo_to_the_bathhouse/
http://www.mangago.me/read-manga/sonna_me_de_mite_kure/
as for actual pure comedy mangas, I love these
http://www.mangago.me/read-manga/arakawa_under_the_bridge/
http://www.mangago.me/read-manga/sakamoto_desu_ga/
Some favorites. http://www.mangago.me/home/mangalist/304126/?filter=&page=1
Anybody have any good pure comedy manga recs? I'm in a very good mood and I wanna have some laughs to make it better. :^)