Cuckold's job is to watch his girl getting fucked and make sure not a drop of cum is wasted licking and swallowing every
Sissy is happy to give up his girlfriend, watch her becoming pleasured by another man and swallow cum afterwards
Becoming a sissy means watching your woman getting fucked, sucking the same dick and swallowing all the cum
Sissy has to be near while his girlfriend is fucking another guy to lick cum from her back while it is still fresh and warm