Aside from being tall...the seme has to be half naked or dressed whenever he's having sex.
After sex the seme has pants on while the uke only has a shirt on.
Mainly what the others says and also seme is very dammanding and possessive.
uke always says "NO" and "STOP" while they are doing it...
extremly girly uke :-P
Uke always have a great ass and their girly moans
Most ukes always feel embarressed about everything and they get very sensative towards seme. Some ukes are indenial on what they want, also seme loves to bully uke.
Seme is always able to get hands on or convert ukes clothes into cuffs, blindfolds, ties. (Oh and seme either always has lube nearby or somehow it's not needed). Seme and uke rarely have same hair colour. Seme has habit of smirking. (Especially when uke finds himself in compromising situation). Ukes generally embarrassed but seme is just so good at what he does uke gives in.
There's so many more ...
=^.~=
and what about my fav : ' I'm not gay! You' re the only guy I could fall for ' ^3^
Seme has huge dicks and a killer body like Maya
Uke during sex: ah aaaahhnn ah ah ah haaa aaaaaaahhh
Seme during sex:
I forgot the most obvious rule! The uke always has bigger or wider eyes than the seme.
=^.~=
Oh, oh forgot something else. Everyone's after the uke who is usually oblivious about it.
=^.^=
Seme Handbook, and Uke survival guide:
http://eddievanpanda.deviantart.com/journal/Seme-handbook-Uke-survival-guide-352576254
part I like the most:
Sorry, young uke, but your semes cure to just about everything is rape sex. Poor uke has the sniffles? Sex! The uke has a broken leg? Sex! The uke got raped by the seme's conniving archrival? SEX! If one could package this treatment and sell it as a cure-all, that person would be a millionaire.
Just for fun. What are some of the "rules" in (most) yaoi?
For example: Seme must be taller than uke.