I guess someone your age wouldn't know, even if you weren't more allergic to wastes of time than Sae-san.

There's a common mechanic in video games where the player character can carry much more than the character model would indicate is possible. I think it's also common in the more gag-oriented cartoons, but I don't really watch many of those. Anyway, they introduced the concept of a disproportionately large carrying capacity into the public consciousness on enough of a scale to affect the Metaverse.