May Allah preserve you. I accidentally saw a video mocking Islam on Instagram. I felt nervous and laughed unwillingly. To check my reaction, I replayed it mentally a few times and noticed I found parts slightly funny, but I hated that feeling. Does this constitute kufr?

Ustadh AbdulAziz al-Haqqan

This constitutes OCD, and I advise you—may Allah Subhanahu wa Ta'ala protect us and you—to seek a Muslim, trustworthy psychiatrist who can help you with this problem.