a.) Porn reference literally meaning spit on my pussy.
b.) Can also be used in a less literal sense to be the female equivalent of "suck my balls" when angry with someone. For even more emphasis and feeling, can add on a b for bitch, or "SOMP-B!"
c.) Term of accomplishment and success
a.) When he pulled out that giant cock I yelled for him to SOMP cause I thought that monster meatsick was going to split me in half!
b.) I grabbed that stupid whore by the hair and told her to SOMP-B!
c.) I SOMPed all over that test!