A sandwich with a filling the same consistancy of what can be found on toilet roll after cleaning up. Any paste type filling or tikka/coronation chicken filling on white bread can be described as a bum wipe butty.
That looks like a bum wipe butty you're having for lunch
Butwiper; Another name for Budweiser beer, because of the massive amounts of morning shits created by drinking excessive amounts of the beer.
Dan: Fuck that man!! Never again!! I shit out two loafs of bread and three bowls of rice this morning because of that butwiper shit I drank all night. Next time its Miller time. Tom: I hear that man!!
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.