potato-helping

Attempting to alleviate a situation by being of help, but instead making no impact or making the situation worse.

A: Hey, I remember you talked about that problem with your boyfriend, so I went ahead and asked him about it. He was kinda stand-offish, but I managed to get your point across.

B: You did WHAT? OK, look, I appreciate how much energy you put into that, but you're really potato-helping right now. This is going to make talking to him harder.

A: Oh, I didn't realize. I'm sorry.