This is the 11672nd most frequent Swedish word.
pappans
"Pappans" means "the father's" in English, indicating possession.
Here, 'pappans' is used as a possessive form indicating that the car belongs to the father.
Pappans bil står alltid parkerad vid skolan.
The father's car is always parked near the school.
In this sentence, 'pappans' is used to show ownership of the birthday party, indicating the event was organized for/by the father.
Vi gick på pappans födelsedagsfest i helgen.
We went to the father's birthday party this weekend.
Here, 'pappans' indicates possession or association, showing that the youth period belongs to the father.