The Horny Boys

The Horny Boys are a boss added in The Binding of Isaac: Repentance that can appear in.

Behavior
Floats randomly around the room and cycles between the following attacks in the following order: OR
 * Summons a Boom Fly orbited by 3 pink Eternal Fly Bombs.
 * Juggles 3 bombs then throws them toward Isaac. Each bomb has a chance of having the or  effect.
 * Chains together numerous consecutive tear patterns while gradually increasing the rate in which they are fired:
 * 4 cardinal projectiles.
 * 4 diagonal projectiles.
 * 4 cardinal projectiles.
 * 8 projectiles in all directions.
 * 12 projectiles in all directions.
 * 8 clusters in all directions, each contains 3 projectiles.
 * 10 projectiles in all directions, rotating counterclockwise.
 * 10 projectiles in all directions, rotating clockwise.
 * 4 diagonal projectiles.
 * 4 cardinal spreads, each contains 3 projectiles.
 * 4 diagonal spreads, each contains 3 projectiles.
 * 8 projectiles in all directions.
 * 4 diagonal spreads, each contains 5 projectiles.
 * 10 projectiles in all directions.
 * 8 projectiles in all directions.
 * 12 projectiles in all directions.
 * 12 projectiles in all directions.
 * 4 cardinal projectiles.
 * 4 diagonal projectiles.
 * This attack ends with Hornfel getting sick and vomiting out 3 fireballs that each extend in cardinal directions upon landing.
 * Teleports 3 times and throws out a short delay Bomb each time.
 * Throws a Bomb at their feet to create a smokescreen before rapidly teleporting to another location. This attack is repeated 5 times.

Trivia

 * They appear to be a conjoining of Hornfel and Loki.
 * Furthering this concept is that they appear to share attacks from both bosses.
 * In the Bestiary, they are referred to as "Horny Boys".