Another unimportant conversation

"sst...sst...menurutmu, STM ini yayasan muslim atau non?" my PPL friend,asked.
"Hm...kayaknya murni deh..." I and my my friend,answered.
"Itu kan namanya, Bu -he called me and all of my friends with female gender, 'bu'- maksudku tu yayasannya..."
"Lha menurutmu apa?" my another 'crazy' friend asked.
"Ah, aku tahu!" I said enthusiastically.
"Apa?"
"Yayasan non muslim! Tu di laci kalian ada Injil kok..."
"Iya ya..."
After a few minutes, a teacher came in.
"Assalamu'alaikum..."
And spontaneously my first-crazy-friend- said, "Ha! Kamu salah! Tu bapaknya Islam! Berarti bener kalo yayasan ini murni...tidak dari agama manapun..."
"Lha tadi sudah dibilangin katanya bukan...heh...dasar" I replied.

ps: this conversation made without any intention to hurt someone/something.