This is a portmanteau word meaning a dollop of swill; it refers to maybe-edible substances in institutional food such as entrees served in school cafeterias or military messes. The word is all the more delicious for being said out loud in company, since it contains in its sound the implication 'swallow'. If you're young and hungry, you'll eat it, despite appearances.
Swallop may be subcategorized: processed pork, eg spam, is swine swallop, fish sticks are cod swallop, meat loaf is moo swallop. Reconstituted potatoes or eggs, warm congealed cereal, stew, mystery meat, and other such offerings merely are swallop.
A variation of a scoop involving an inital jab into the flesh, near the hip bone, followed by a speedy movement towards the nipple, hitting every rib bone on the way. The action is then finished with a scoop.
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.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"