♪ I'm ace at all anatomies, a master of dissection ♪

♪ An expert chef who wields an expert knife ♪

♪ But still I sense a gremlin in this system of perfection ♪

♪ There clearly are still mysteries to life ♪

♪ Its kingdom, phylum, class and then it's order, family genus ♪

♪ It all comes back to me like child's play ♪

♪ Then he leans over my shoulder there in all his long and leanness ♪

♪ And cuts my hard-earned knowledge clean away ♪

♪ I try to keep a focused mind ♪

♪ And steady hand ♪

♪ But the rhythm of my heart ♪

♪ Is like a country western band ♪

♪ Oh, biology! ♪

♪ What have you done to me? ♪

♪ Why can't my grownup brain control my teenage parts ♪

♪ Oh, biology! ♪

♪ Why won't you let me be? ♪

♪ Why can't you be humane ♪

♪ And still our beating hearts ♪

♪ Before the cutting starts ♪

♪ She's so confident and cocky, it's a total transformation ♪

♪ I'm sweating, but I'll try to play it cool ♪

♪ But I open up my mouth to try to make some conversation ♪

♪ And somehow end up sounding like a fool ♪

♪ Yo, dude, that's sick, I'm way impressed, like, ♪

♪ Sweet technique ♪

♪ O.M.G! ♪

♪ Um, like, totally, um thanks ♪

♪ Come on now, can't I even speak? ♪

♪ Oh, biology! ♪

♪ What have you done to me? ♪

♪ My over 40 soul is in a teen cliché ♪

♪ Teen cliché ♪

♪ Oh, biology! ♪

♪ Why won't you set me free? ♪

♪ 'Cause I'm not in control ♪

♪ When hunger has its say ♪

♪ And hormones have their way ♪

Focus, Blake. Focus.

♪ Hey, what is up with El today? ♪

♪ She seems, well, kind of great ♪

♪ She's always great-- but, yeah, it's nuts ♪

♪ That girl is on my nerves today ♪

♪ I better set her straight ♪

♪ You better let her know what's what! ♪

♪ I never knew that Ellie Blake was such a science whiz ♪

♪ She's smart of course that much I knew ♪

♪ But something's up with her today, I don't what it is ♪

♪ But then just maybe I feel it too ♪

♪ I feel it too ♪

♪ We feel it too ♪

♪ That girl is through! ♪

♪ Oh, biology! ♪

♪ Look what you've done to me ♪

♪ My heart is in a pan ♪

♪ My brain is out to sea ♪

♪ Oh, biology! ♪

♪ Why won't you let me be? ♪

♪ Please help me if you can ♪

♪ Please hear my painful plea ♪

♪ Biology ♪

♪ Biology ♪

♪ Biology ♪

[bell rings]

[chattering]

Oops. Everyone, get out of the way. Savannah is coming through!

♪ Please set me free ♪

♪ ♪