1. Horny seme/slutty uke.
2. Rimming, but only because the uke says "no, it's dirty!" referring to his asshole, when people in real life just use enema and do the pre-anal sex preparations. They make it horrible in yaois. I hate that.
3. When the seme doesn't even take his clothes off while having sex, but the uke instead is fully undressed.
4. Pu......
