Unknown donk-call then shove

Yeah well, he's sitting short and the donkcall is, as you say, spaztastic.

While I do expect to see a bizarre 2 pair here sometimes, I don't get wtf he can donkcall the flop with that then shoves the turn.

I mean, when I raise the flop, if he has a value hand, he's surely either gonna:

a. 3bet the flop

or

b. Flat the flop raise then check the turn to me and extract the monies

The line he takes just seems to shout "FOLD" to me, so I expect more spaz than value hands here.