The Messy Brunch just merely the act of pissing on another person's face. It fits in with the rest of the "Messy Meal" family. See: Messy Dinner/Lunch/Breakfast. This is a mere taste, similar to an appetizer for the main dish/meal.
Dammmmn, that guy got a messy brunch yesterday, it got him all wet and drippy.
Similiar to the Messy Dinner and Messy Lunch. This however, lacks the two primary components of the dinner/lunch. Instead of smearing shit and/or peeing, you smear smegma on the person's face. IE: Dick Cheese
Those two homos just gave each other a messy breakfast. See Messy Dinner, Messy Lunch, Messy Brunch.
Basically, a hot carl (Letting someone shit on your face directly), but the upper-class, upscale version of said act.
That billionaire gave that gay hooker a Hot Carleton. Grizzle.
Similar to the Messy Dinner, however, this lacks the peeing on the face after the shitty face-wash. IE: Just a face wash with shit on your hands, violently so. Also, see Messy Breakfast/Messy Dinner/Messy Brunch.
Dag, that d00d just got a messy lunch from his gay lover.
The act of giving someone a face wash with feces on your hands, with a violent action. Then standing up and peeing on that person's face, by thus action, creating a messy dinner. IE: Smearing shit on someone's face very violently. Also See: Messy Lunch.
He totally gave that hoe a messy dinner.