The female version of 'Munging', a gang of rampant girls/ladies go to a graveyard in the middle of the night (at least 4 participants required). Dig up a fresh (ish) male corpse and place his body onto a grassy area face up, four doughnuts are placed onto the dead flaccid penis in order to make it stand to attention.

All girls/ladies get naked and stand on top of their nearest tombstone, they begin to pleasure themselves while chanting 'blockhead, blockhead, blockhead' - at the point at which they are about to reach climax each participant jumps from their tombstone, sits on the body's face and gyrates while eating one of the doughnuts.

To conclude the ritual each participant slicks their fingers down their throat and vomits onto the dead flaccid penis.... (custard doughnuts are recommended for extra effect) - the last to vomit rides the cadaver and then hoovers up the sick, lady juices, mud then when she is done she screams ‘blockhead’ as if possessed by the devil himself – others take pictures and post to social media.

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.