Pop

From HGWiki

To pop an item is simply the act of activating a loot container by clicking on it, which in the case of chests, bags, and other such containers possessing loot, causes the loot to "pop" into the resulting bag of remains. Popping is quite the opposite of bashing, a practice that is generally frowned upon when it comes to acquiring loot of the "not broken" variety.

When popping random loot, there are certain antiexploits involved to ensure that players are progressing through an area and not just running through and grabbing the loot. The generally accepted practice is to pop loot as the party progresses through the area. For situations such as treasure rooms at the end of an area/run, having multiple people in the party pop loot is sufficient to avoid antiexploits.

Random loot is determined when a container is popped.