It originates from the episode of South Park called The Jeffersons. In this episodes a new person moves into South Park who is supposed to be Michael Jackson in disguise. This new person is called Michael Jefferson. Mr. Jefferson likes to sing and makes these sounds: hee hee (said in a very high voice), jikjamona, jahmone, jikjabeejerka. So a Jefferson blast is when you make any of these sounds at random periods in time.
Person 1- Inside the core of the sun hydrogen-
Person 2- HEE HEE
Person 1- god dammit Elliot. Will u quit doing Jefferson blasts!
Person 2- HEE HEE
Person 1- god dammit Elliot. Will u quit doing Jefferson blasts!
by poopy butt January 16, 2016

When in a three way and cumming on the girl (either boobs or face) the area in which cum might shoot is considered the blast zone. The other guy is to stand back and whack while until the other guy finishes so he doesn't get hit. When the man is finished the other person approaches and the just finished person backs up to respect the mans Blast Zone.
by Jamgasm675 October 23, 2008

by nerfthemedium October 10, 2021

When your co-worker wears a tassel on his ear and then whips his head quickly to the side, blasting you in the face with nothing but pink tassel.
by The Grumpy Munchkin December 2, 2013

by honest op December 20, 2016

An obnoxious amount of snapchats sent to one person in an attempt to manipulate your top friends list in snapchat
by SukhMaya007 November 29, 2015

by anonymous March 26, 2021
