Directly after you take a shot you eat poprocks and your mouth starts thizzing. Making the people partaking in this feel really good. This is very common amonst teens in the west coast at partys.
Dude did you see dave he was thizzing way to hard and threw up everywhere!
by californiadrinker August 17, 2010
To trip on Ecstasy; to be on E.
"Yo, last night Melissa was thizzing at the club and she told me she loved me!"
by Jamal January 23, 2005