Top Definition
An orgasm that is so strong that the resulting undulations register on the Richtor Scale. A seismogasm can occur in either males or females. While a female seismogasm can often have high seismogasmic aftershocks, a male seismogasm usually results in a sticky gym sock, a cigarrette, and often sleep.
I gave her a 7.0 seismogasm wilth 4.0 aftershocks.
by AFIZZY January 14, 2014

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×