The grade where school foes from fun to hell. Being one of two "upper grades" of elementary school along with fourth grade, teachers become more strict to their students.
Dad: How was Third Grade
Me: It was boring as fuck
For a male or female to have a third leg that is a known be many and be loved and feared at the same time.
There goes Tammy right there, you know she's the one that has the third legacy.
Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents and eleven great-great-grandparents in common.
Irregular-sextuple-third-cousin.
Living being that has zero parents, zero grandparents, zero great-grandparents and eleven great-great-grandparents in common with other living beings.
irregular-sextuple-third-cousin.
To be immature
Just because you don't like something doesn't mean you need to sit in the third row back.
a special burger that McDonald's did in the eighties where a burger had of a had a third of a pound of meat instead of a fourth of a pound, which is why the burger is named the third-pounder. It turns out the majority of participants incorrectly believed one-third of a pound was actually smaller than a quarter of a pound, so it was briefly discontinued
1. wow this third-pounder is so big compared to the quarter-pounder!
Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents and eight great-great-grandparents in common.