A couple of things to add about this song.

Additions/edits to the glossary:

obydwa = both
pzepic = drank / to drink
robic = to work

In the English translation of "Tatus" shown above (the first one) the second line of each verse does not follow the Polish shown. In the first verse, for example, we see:

On a Monday morning,
busy Monday morning,

The Polish words show:

On a Monday morning,
Father mowed hay, (father cut hay)
Father mowed hay, I mowed hay,
We mowed together, he and I (or, "we both mowed")
Father mowed hay, I mowed hay,
We mowed together, he and I