Because... they are so viet *ba dum tss*
He was Russian.
Ice Krim(http://en.wiktionary.org/wiki/%D0%9A%D1%80%D1%8B%D0%BC)
Pho queue
Because they're so...viet.
Gluten tag! Ba-dum tss.
A hissy fit. ba dum tss.