When a man leaves a penis bruise on a woman’s face. Usually done in the process of hob-knocking.
After Brennan finished hob-knocking Oliver and Seth. They all went to Walmart to buy condoms (for anal with each other) when they looked in the mirror and noticed Seth and Oliver had a monstrous dick whap on their face. To describe this monstrosity of a dick whap within the bruise you could not only see the penis but the shaft as well, at the end of the shaft located the bell.