It means “something”

A man who messes around with other men, but no one would ever know by looking or talking to him. Used by gay black men to identify masculine gay men or DL Brothas.

Slang for "something"; "some of"; "some of them";

Sums is an acronym for Spontaneous Uncontrollable Masturbation Syndrome. Sums is caused by puberty, boredom, lack of action, high sex drive, hot people, ect. It is characterized by spontaneous and uncontrollable masturbation, often at inappropriate times such as at the park, when voting, or in line at the bank.

It can be used as something or as some but really mostly to get booty pics from a girl or said when you got some pussy.

a lazy persons way of writing the word 'some' also one of those idiot who likes making things shorter by taking of the last letter of last few letters
some = sum
dumb = dum

a big and huggable teddybear