Merge or Delete Threads of same title by same user?

[cashpath]

Is there any way to have the board Merge Or Delete threads if they have the same exact title posted by the same user?

There is probably a hack for this I'm just having trouble finding it.

[cashpath]

OK so lets say the same user posted a thread twice and it had the same title both times... is there any way to merge those threads or delete one of them automatically?