Six researchers from Australia and the United Kingdom swallowed yellow Lego heads and kept track of how long it took to poop out the little plastic buggers.
"The Fart score - how many days it took the Lego to pass through the bowels - was between 1.1 days and three days, with an average of 1.7 days", wrote the Guardian.
Published in the Journal of Paediatrics and Child Health (yes, seriously), the painstaking dookie review was undertaken by scientists Andrew Tagg, Damian Roland, Grace Leo, Henry Goldstein and Tessa Davis. But, no, even the researchers themselves aren't taking it too seriously, calling it "a bit of fun in the run up to Xmas" in a related blog post. The group appear to think life's poo short not to find out how long Lego blocks take to end up at the bottom of the toilet bowl. It's all about the acronyms.
To do this, the pediatricians swallowed the toys and then monitored their bowel movements over the following days until they located the toy.
With children across the globe sharing a willingness to swallow anything they get their hands on, researchers wanted to find the "typical transit times" for the toy building block.
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"This will reassure parents, and the authors advocate that no parent should be expected to search through their child's feces to prove object retrieval".
Six paediatricians from the Royal hospital in London made a decision to voluntarily swallow the heads of LEGO-men, to see how quickly small items that often swallow children pass through the gastrointestinal tract. The researchers also note that "females may be more accomplished at searching through their stools than males", adding this "could not be statistically validated".
For the experiment, all six researchers scarfed down a Lego figurine head before documenting the outcome.
In addition, experience has shown that the head is LEGO coming to light faster than coins (the authors here rely on the study 1971).