To be the life, and subsequent death of the party. Usually accomplished by bringing ample amounts of goon and sharing it with all your friends. Keg costume is preferred, but not essential when Isaacing.
by SerSlev November 17, 2014
Get the Isaacingmug. Isaac is a nice guy with a big dick and six pack. He is an excellent swimmer and all girls want to open their legs for him. He is clever and has a big heart.
by big willy 21 May 13, 2020
Get the Isaacmug. by sensei crabs June 5, 2022
Get the Isaacmug. He is a tiny little guy who likes to jump around on his little legs. He loves nature especially the jungles because he is more like an ape then a human. He loves to climb things like trees. He is very lonely in his friends eyes but he isn't actually that lonely. He is a very lost little boy.
by IsaacHub.com December 13, 2016
Get the Isaacmug. nigga balls is isaac
by anonymous December 10, 2020
Get the Isaacmug. 
He is a butthurt person that cries when made fun of and can’t stop crying for the smallest reasons. He is the worst at playing video games and sports and when you want to 1v1 him he backs down because he knows he is about to loose. He has one of the smallest penis in the world and thinks he has money. But actually is a big snake and don’t friends with him.
by Tbb Bacon October 16, 2019
Get the Isaacmug.