repetitive nonsense blurting out

Hi, I have been diagnosed with OCD and several other mental disorders....but I have this really, super weird habit...whenever I get a disturbing thought such as is common with OCD, i physically blurt out something nonsensical and usually of disturbing content. This happens to me everywhere - at home, in the grocery store, on the bus etc. Does anyone else do anything like this? My psychiatrists (of which I've had plenty) can't come to a consesus on this. Apparently, it is not Tourette's (I don't grunt, but sometimes I say filthy words). My current psychiatrist says it's a "nervous habit", but I've never heard of anyone doing what I do before. Any help?

When I get a disturbing thought, I'll shout inside my head whatever I can think of to make it stop. I have an above-average filter on my mouth though, so very little gets out.