Do you know what is soda drink powder? In Hungary, that was quite popular in the time of my childhood. It is not good, lol, but for a weird reason nobody knows, it was in every gift bag on 6th of Dec.
Children never put the powder to water as it is intended, but open the tiny bottle and scatter the powder into their mouth, which sometimes caused the sweet and sour powder become powder-saliva mix and it got stuck in the bottle. :D
It comes to my mind because I eat some z-category instant 3in1 coffee the same way now (except the amateur parts). :)
(In fact, this is just a translation of my post written yesterday, but it was so weird-good I will repeat it tonight. :D )