Richie once stuck his head in a gas oven for suicide but it was for attention and stopped once he realised he wasn't getting any, there maybe some other instances
Richie chops his finger off by accident and Eddie has to staple it back on. Blood shoots out of his hand for about 90 seconds. The stapling is filmed at an angle where you don't actually see Richie's hand, but you do see him in pain.
Richie is sometimes referred to with feminine pronouns and slurs due to his behaviour and his personality compared to ed, normally used as an insult to him but it isn't really played up
Richie goes to hospital because he gets a premonition from a fortune teller that he's going to die. The scene takes place in the waiting room, but there is a bit where he obliviously intrudes on a heart surgery and there is blood.
No. A baby is left outside Richie and Eddie's door and they think they have to keep him, but his family shows up at the end of the episode and there are no attempts to steal him.
Eddie is shown with an enlarged stomach after eating the entire contents (or maybe just the majority, I can't remember exactly) of the neighbor's refrigerator.
When Richie comes home from the hospital in the Season 1 finale Accident he ruins Eddie's party and decides to play birthday charades where He grabs on a woman's blouse trying to rip it off her even though she doesn't want him to
There is vomiting in the show, in the first episode Smells, Eddie is drunk and he vomits on Richie and in Season 2 episode 3 Burglary Richie and Eddie try to poison the Burglar they tied up who was trying to rob their flat, they try to poison him with pigeon pallet which gets put in a cup of tea and after he gets force fed it he throws up
many characters speak about and too Richie as if he is mentally handicapped, to be fair it's not an invalid point as he genuinely does seem to require some help, it's normally just stuff like "is there someone who looks after you?" and "I thought (s)he was being put away?" all played for laughs