Katamari

... a lawyer from Washington says he met Obama on Mars after listening to David Wilcock discuss jump rooms on UFOs, somewhere back behind all the extra details that have been tacked on at every point in this chain like a katamari

Source: wiktionary

Also, like a katamari, she tended to destroy things in her path. I would miss her. Hopefully marriage wouldn't change her too much.

Source: wiktionary

It's like a Katamari effect. It would take only the slightest hint of a revolution to roll it all up.

Source: wiktionary

Sunk costs snowball, like a katamari. The resources you have already spent make it less likely you will quit, which makes it more likely you will accumulate additional sunk costs, which makes it again less likely you will quit[…]

Source: wiktionary