Sectional 

An oversized sofa usually double the size of a regular couch

Steve : Wow Kaylee is super pissed today!
Kiersten : So what else is new!
Kaylee : Kiersten I would appreciate it if you and Jake would not fuck on my couch while im sitting on it with you!
Kiersten : It's a Sectional Kaylee & there was plenty of room!
Kaylee : You got cum on me and stained my new couch!
Steve : it's a Sectional Kaylee!
Kaylee: Oh Shut The Fuck Up Steve!

Sectional by SlopNChop June 29, 2018

sectional 

When you have to shit so much that you cannot physically shit all of it in one sitting, and need to take a break while the rest of the shit queues up in your intestines. The waiting period can be any amount of time between 20 minutes and a couple of hours, and usually the shit can be completed in two sections, though it may take three or more with epic shits.

"Just a sec guys, I gotta shit"
"Dammit Chris, what the hell is wrong with you? You just went to shit like 20 minutes ago!"
"Sorry boys, after all that shitty beer and T-bell last night I gotta take a sectional"

sectional by Pineapple Hider September 10, 2009

sectional erection 

state when only half of the penis becomes hard, preferably the middle half

She ripped off my pants, but reeled back in horror when she found that I was not fully aroused, but had in fact, a sectional erection.

sectional erection by a&w May 12, 2006

Sectional Harassment

The act of harassing members of your section in marching band either sexually, racially, by grade level, or just plainly being annoying.

"Hey you stupid freshmen, stay in step"
"Wow, <insert name here> are hot, do you want to play with my skin flute?" These are some examples of sectional harassment.

Sectional Harassment by j4991 November 11, 2011

sectional intercourse 

When the first chair clarinetist slides the bell of his clarinet over the mouthpiece of the first chair floutest and whispers slyly in her ear, “we are having sectional intercourse.”

We had sectional intercourse during band rehearsal today.
My mom doesn’t know but I’ve been having sectional intercourse since 6th grade.

This one time at band camp I had sectional intercourse.

sectional intercourse by Marriedtoaclarinetplayer August 17, 2018

sectional couch 

crappy ass couch for an elderly couple

my grandma and pappy got a sectional couch

sectional couch by crzygolf2000 June 23, 2017

Trans-Sectional 

a person who changes instruments.

Lisa is a Trans-Sectional. She was no good at clarinet, so she changed to Saxophone

Trans-Sectional by bandgeek4evah February 26, 2010