A quag bag is your ball sack, or your bag that holds your quags.
“Oh shoot my quagbag is showing”
When someone laughs really hard.
"i just burst nurst" "i just nurst out laughing" "im nurst" "im nursting" you can just say "nurst" by itself, too
A males testical, or “balls”.
“Hey dude I just got kicked in the quags.”