I used to have them when I was in grade school. I HATED school, and Sunday evenings HATES me.
But now that I'm in uni, it's not bad, not bad at all. Occasionally I do have the blues, mostly on weeks where there's exams or papers due 🙄 Otherwise, the weeks just whiz by so fast, and BAM! It's Friday already - and it's PARTY TIME, yet again!