-plural pronoun, possessive their or theirs, objective them.
1.
nominative plural of he, she, and it.
2.
people in general: They say he's rich.
3.
(used with an indefinite singular antecedent in place of the definite masculine he or the definite feminine she ): Whoever is of voting age, whether they are interested in politics or not, should vote.
You sir, you are a typical stereotype of a no life that sleeps on the PC in an attempt to find the minimal reason to criticize someone.
Also, attempt rated as a fail.
It's summer break, go get laid, and avoid this kind of activity in a forum.