Noun: A foul sandwich made by having a prostitute or other unsavory character shit on a hot cross bun, which is then eaten by the participant who gets sexual gratification.
Verb: To undertake the production or consumption of a Scumbert Cross.
Where 'Scumbert' is a merging of two words: 'Scummy' and 'Herbert', Herbert being a standard name that is also used to refer to a dull, shy or sexually deviant individual.
'Nobody knew him that well, but they found out he was a sexual deviant. He'd ask the working girls to give him a Scumbert Cross. And he loved it, too!'
'One night, two old scatters were at home. The woman went to use the bathroom but seeing there was no toilet paper, was a little shocked to see her partner standing in the doorway holding a pack of hot cross buns. Use these, he said. But don't throw them out. She smiled back at him and made sure she covered the whole bun.'