The act of following up a meal with another meal/snack. The first meal consumed was a plentiful amount of (a/many) specific food(s), followed by a feeling of pushing maximum stomach capacity.
Usually, burging consists of no purpose whatsoever, but may occur in order to change the leftover taste in the mouth.
"Last night I ate all you can eat sushi, and then when I got home, I totally burged on pancakes just for shits."
"Steve: Wow, I still taste the seaweed on my tongue.
Devra: Gross, go burge on cheetos or something."