Ok,
Here's one, so you don't feel bad.
I performed my 50 hour service on my BX24 yesterday. Went over everything before to get a plan. Plan was, fuel filters first, air filter, engine oil and filter, hydraulic oil and filter, then axle gear oil last. Well I was up to the engine oil and drained it. I slid my collection pan over, so I could remove the oil filter and catch any oil with the pan. I had the cap style oil filter removers, you know, the type that use a 1/4" ratchet. Well, every time I tried the cap slipped on the filter. It(the filter) was on there good. Tried for a while and decided to take a ride to Autozone. Picked up an oil filter plier and went back home. Filter came right off. Great, right. Well I installed the new filter and started filling the engine. I got about half a quart in and got that oh, oh feeling. Anyone, anyone.
Yep, I forgot to put the drain plug back in the engine. Darn. I saw some nice clean oil coming out. Popped the plug in and everthing else went well.
Could I get by with telling people, it's a new way to flush the engine with fresh oil. Probably not.