I went to a server and said "Hi, may i plz have admin, and then he said the admin pass. so i put it in and i became admin and then he said "Where did you get admin from?" and then i said that i got it from hi and then he banned me for knowing the admin pass, wich is really stupid cause he was the one who gave me the admin pass in the first place.
I do something similar. When someone joins, and asks for admin, I admin them, then ban for the reason: You have admin. Now leave.
Also, great to see this topic is still thriving. =D