How I thought YAOI smut worked/

So when I got into anime when I was 10 (almost 11) I saw yaoi and gay things get thrown around kinda often and... It felt weird, and didn't try because I knew it was wrong but I guess I was interested because guys being dominated was just//// anyways I would listen to BLCD's because I somehow stumbled upon those and I heard the uke's whine (moan) and wet sounds... I thought they put it on the penis (Lmao) and when I saw how they did it (anal) I was like oooo and I was like why they crying that doesn't hurt... is pooping basically (XD) and I thought when the white cum came out (I watched Sensitive pornograph once when home alone) it was something the seme poped inside the uke... Ya... share me ur assumptions too guyss