am i mean??

so i was taking a shower and my brother knocks on the door to hurry up. i tell him 5 more minutes but i lost track of time and 5 minutes pass and im still not done so he knocks on the door again. i say 5 minutes and then get out. he then tells me im the most selfish person he's ever met and i was taking up his time when he wants to go to sleep (its like 11). i laughed at him because last night he made me stay up till 2 am to watch anime with him. i guess he thought i was mocking him while laughing so he got even more mad. after i got into bed he comes into my room and tells me im a bad person and that im disturbing and that im so selfish. am i these things?? i mean i did take a 50 minute shower but its very rare i do that. im just sad