agreed.
also, sorry but you (fellow) nerds are terrible at naming.
while "thunking" possibly name-collides with "thunks" from CS, the key is that it is memorable, 2 syllables, a bit whimsical and just different enough to both indicate its source meaning as well as some possible unstated difference. Plus it reminds me of "clunky" which is exactly what it is - "clunky thinking" aka "thunking".
And frankly, the idea it's naming is far bigger than what a "thunk" is in CS