I need something embarrasing.

http://www.mangago.zone/read-manga/be_sweet_to_me/
http://www.mangago.zone/read-manga/happy_end_o_shinjiteru/

I wasn't going to recommend anything 'cause I hate embarrassment, but I just read on the lasts comment's lists one that says "I HAVE TO STOP EVERY 20 SECONDS BECAUSE OF THE SECOND HAND EMBARRASSMENT" and I thought that might be what you are looking for (I never read it)

http://www.mangago.zone/read-manga/experience_scene_of_xx/

i had to run laps ALL THE TIME http://www.mangago.zone/read-manga/our_future_cheok_kong/