yeah man I "stutter" is also one of the words I can't say without preparation but it doesn't really affect me since I never talk about it haha. Sometimes I try to replace "other" with "on the flip-side", "next", "previous", "this", or directly referring to the subject, but it just doesn't have the same effect. It seems like the thing that all these words have in common is that you have to quickly bend your tongue back to make the "er" sound which I'm not able to do quickly or smoothly enough so I get these crazy blocks.