head in urethra

When a character's head is inserted into the urethral opening of another character.

This most often involves a character's head inside of the urethra of another character's penis, often signalling the beginning of cock vore. Alternatively this may be a part of a character tonguing the inside of the urethra, similar to deep rimming, or a character using a much smaller character or creature's head as a living insertion.

Rarely, a character's head may be in the urethra of the female genitalia - possibly the start of pussy urethra vore.