seshing 

to smoke (usually canabis) or drink (not as commonly referred to as seshing) in a group.

like "sesh" but speaking in the present tense.

can also be shortened to "seshin'"

"Hey man, we're just seshing right now, so I gotta call you back"
"This is definitely the highest I've ever been, seshin' with you guys is rad"

seshing by ella-babe January 31, 2015

Seshing 

Partying, going to a party

We went seshing yesterday.

Seshing by Seshin' February 2, 2019

Seshing the fuck out 

Sessioning to the maxium, having an ultimate session.

1. "Did you sesh the fuck out of (random club name) last night?"
2. "I'm seshing the fuck out of it"
3. "I seshed the fuck out last night"

Seshing the fuck out by Barnesy 2010 May 29, 2010

SESing 

Spontaneous Erection Syndrome: Affecting usually young teenage males 12-15 years old in which they unfold an erection randomly for no apparent reason. Similar to females' "PMSing", this term can refer to the embarrassing occurrence of this event.

Jimmy: "Did you just see Ben get a boner? I think he wants to get it on with Mrs. Patterson!"

Gerald: "Nah bro, he's just SESing."

SESing PMSing boner penis erection

SESing by Steven Gerard November 2, 2012

Seshington World of Adventures

(Noun) The mystical destination one arrives at when they consume enough narcotics and booze in one sitting to achieve a deity-like state of mind #paradise

Somewhere in Valencia, 2017...
“Oi Seano, you ain’t said much lately.”
Seano: “I can’t talk right now. I’m in Seshington World of Adventures.”

Seshington World of Adventures by Dirty Mike Do What You Like May 31, 2019

seshin 

spending many hours on a computer game or drinking with friends

Playing on a on-line multiplayer game, like a cod sesh, or a FIFA sesh, yuo can also sesh with your friends when you drink. This is called seshin

seshin by Richard Howey July 11, 2006

sheshing 

Art of performing oral sex from a man to a next man

e.g. OMG, he looks as though he got a good sheshing

sheshing by jus4q December 5, 2013