This is the 6682nd most frequent Polish word.
dwójki
"Dwójki" in English means "twos" or refers to pairs, or can denote "grades of 2" in the Polish grading system (equivalent to a "D").
Here, 'dwójki' refers to dimples, often a colloquial term used to describe dimples in knees or other parts of the body.
Mam dwójki w obu kolanach.
I have dimples on both knees.
In this context, 'dwójki' colloquially refers to grades (marks) in academic settings, specifically a negative evaluation.
Dostałem dwójki z matematyki.
I got low grades in Mathematics.
Here, 'dwójki' means pairs or groups of two, indicating a division or arrangement of participants.