Andy Deans (@GenomeStability), a researcher at St. Vincent's University that studies the DNA repair genes related to Fanconi anemia and just a really nice guy, posted this week on twitter about a crazy MTA that he received from someone when trying to obtain a plasmid from them. This MTA is so nuts I just had to post it.
I can kind of see co-authorship if its a relatively new reagent or something hotly in demand. But having editorial control of the manuscript when you just provided a reagent is bullshit. It would be like asking my neighbor to borrow his tire iron to change my tires and he can then tell me which kinds of tire I have to buy. Its a bit delusional really, but I hope Andy got it all resolved.