Sissy Crossdresser Humiliation
Forced feminization (taking on the characteristics of a female) often includes bondage. Cuckolding (where the woman has sex with "real" men), forced oral and/or anal sex with "real" men, penile castigation, lashings, and surgery are more severe versions of forced feminization. Verbal abuse and embarrassment is a standard variation, usually with acute bondage.
There is a well-known tradition of strong, dominant women keeping their husbands in submission and forcing them to serve as a female slave: being dressed in humiliating outfits (French Maid appears to be very common), forcing them to behave subserviently in public, name-calling, use as a toilet, and the whole range of typical dominant/submissive training and humiliation plays.
In light bondage, a sissy is lightly restrained. This can include such things as tying a sissy up with silk or ropes or a simple blindfold. In light bondage the sissy in bondage can normally escape from the bondage without any help. The intent of light bondage is to give the sensation of giving up control.
In heavy bondage, however, a sissy is more seriously restrained. This can include ropes, chains, cuffs, leather, and all kinds of specialty gear. In heavy bondage, the sissy in bondage cannot normally escape on his own. The humiliation or sissification process is much more intense and potentially dangerous.