TIL rolling your tongue like a taco is NOT a genetic trait
https://www.pbs.org/newshour/science/genetic-myth-textbooks-get-wrong
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1nt7n8z/til_rolling_your_tongue_like_a_taco_is_not_a/
