I know there's a few posts about this BUT, this is not exactly like the other ones since this one does not include mailing the mug.
So as you all know it's Midsummer Fire Festival in WoW at the moment, and they have handy drinks in Stormwind/Orgrimmar and all large cities.
But, the mugs have a 1 day time limit, right? But you don't want that, do you now?
So this is what bugged my mug: I had a Filled Festive Mug in my bank just for fun since New Years Eve. And I don't know how this happened, but one day when I was going through my bank I saw the mug with 1 seconds duration left, so I took it out from there but the duration never expired.
So I think the patch that came a bit after bugged it, well here's a small guide:
1.) Get as many empty mugs as you want.
2.) Fill them up.
(3.) Try not to drink them, PLEASE!?)
4.) Put them in your bank, for 'safekeeping'.
5.) Wait until patch 3.2 comes live.
6.) Take them out of the bank.
7.) ???
8.) Profit!!!
Either the patch bugged the mug, or it's duration never expires if it has been in the bank for 24 hours.
Well this little gadget has helped me with my exploring, saving my life from really, really, really, really high falls and you can drink yourself drunk like a pirate, ALL DAY LONG!
Hope you like it, peace out! (Btw; Bug my mug, sounds funny doesn't it?)