What Package?

[TigerHunter]

Double entendres aside, what is Hinjo referring to in the second to last panel of 418? I couldn't find any references to him mailing anything in previous strips. Is it just something I've missed, or is it something that, cleverly disguised as a throwaway gag, may play an important role in the upcoming battle/plotline?

[Shhalahr Windrider]

It's a throwaway gag.

His package is a double entendre in the same manner as his junk. Both words can be used to refer to specific pieces of male anatomy.