erection ()
A character with a visibly stiff penis.
An erection is produced by increased blood flow into the penis, caused by arousal. I.E., seeing a sexy female character naked, seeing a female character's big breasts upon undressing, seeing a character's penis or engaging into sex.
- If the penis is obviously erect but not directly visible, also use bulge, tenting or penis_outline.
See also:
This tag should imply penis, going by the wording.