The phenomena that occurs at school (generally towards the end of a class) when one person puts their papers away and, like a yawn, inadvertently causes the rest of the class to follow suit by shuffling their things together at the same time. The result of which is a very loud and distracting noise something like a popcorn maker in a hailstorm.
Responsible kid1: "Hey man did you get the homework assignment from Algebra today?"
Responsible kid 2: "Nah bro, the professor was finishing up his lesson when some douche behind me started packing up."
guy: "i love you, do you love me?"
girl: "well i love you like 10th grade science class..."
guy: "huh, why 10th grade science class?"
girl: "there's so much chemistry."
guy "o-got it.well, I love you like 11th grade science class."
girl :"physics?"
guy: "ya, there's so much potential."
(guy and girl make out like 9th grade science class, biology-life or creating it)
A phrase to show one's affection to another. 10th grade science class where i come from is CHEMISTRY. If the person that you tell this phrase to asks WHY? Just say "cause there's sooo much chemistry."
Friend 1: "I love you like 10th grade science class..."