something that is jizztastic is something that is so fantastic that it can make someone ejaculate or "jizz" while thinking about it
The xbox 360 is far better than the playstation 3, especially with jizztastic games like Halo 3 and Gears of war.
by the suckster360 January 18, 2010
The olympics of jizzing. Everyone is a winner and gets a gold penis for WINNING.
Jeremiah: Hey what's up?!
Jonathon: Nothing much...thinking of signing up for the Jizztastics.
Jeremiah: Ohhh jeez, that sounds fabulous. I'm going to jizz a quart.
Jonathon: No no, I'm going to jizz 2 gallons.
by BoredCollegeKidd November 04, 2011
Something is so fun, hot, or amazing that you want to jizz everywhere
That girl with nice tits made me feel jizztastic!!
by Aphish December 16, 2009
Jerking off worthiness
"Amputee Porn is JIzztastic, I like to beat my meat to it"
by Jizzalot CockThrobbington June 30, 2014
something that is so good awesome or fantastic that you jizz
hey tom remember that pub we went to, that was jizztastic
by jizmman April 27, 2011
An inordinate amount of ejaculation/sperm/jizz. Usually applies to a man that has not 'spanked the monkey' or had sex in awhile. Generally used after oral sex, when a woman can accurately determine the amount of ejaculate she has swallowed.
Woman: Wow honey -- that was JIZZTASTIC!

Man: I've been saving up.
by THE Blonde Bombshell August 14, 2010
Something so exiting that people who see/hear/smell/or think about it jizz in their pants.
Those muffins are so jizztastic.
by brennan JP August 07, 2010

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