An expression invented by the author of the online forum "Gaetanotto.com" in the year 2012. Popularized some years later all through South America, it translates as "your mom".
tuvira is a girl who acts tough but is actually a big softieon the inside, trying to hide her true feelings.
she also has had a crush on a kids for roughly about 6 years and doesn't have the guts to tell him for she fears she will lose him as a friend