If someone used "ouchful," they might be trying to:
* Emphasize pain: They could be exaggerating the painfulness of something, using "ouchful" to highlight the "ouch" factor.
* Be humorous: It could be a silly way of describing something that's unpleasant or uncomfortable.
* Create a new word: They might be trying to invent a new word to describe a specific kind of pain or discomfort.
Without more context, it's hard to know the exact meaning someone intended when using "ouchful."