Magiculation or horn arousal is the phenomenon where a horn is made to magically secrete wetness to show the character's state of arousal.
It often resembles a horn that is starting to 'melt', with beads of moisture or dripping unexplained wetness on the length of the horn.
It is also often depicted as a clear fluid or the same color as the horn it is secreting from.
- Not to be confused with cum_on_horn where there is also visible ejaculate on other parts of the character's face, mouth, hair, etc. And the horn itself looks solid with no signs of any "melting" appearance to it.
See also: