This is kind of embarrassing but every now and then, rarely, after I spank the monkey I get a painful burning inside my shaft. It usually goes away after a bit and then I'm perfectly fine. I've experienced this for years now but it is very rare it happens. It happened last night so I just thought I'd come in here and see if anyone else has had this or knows what it is. It doesn't seem to be a major problem, it just hurts like hell when it happens and I'd like to avoid it in future.