We all know Dwayne Carter loves to slang that bare wood. Now his alleged baby-grandmama Brenda Ann Brown wants his sperm too.

TMZ reports, Brown claims there was another random BM between Toya and Lauren: her daughter. We’re not sure why her daughter can’t speak for herself though.

Lil Wayne may have a lil illegitimate kid running around — this according to a Missouri woman who hit Weezy with paternity papers while the rapper was serving time at Rikers Island.

Weezy — who’s already fathered 4 kids that he’s aware of — allegedly sired another child back in 2002 … and now the 8-year-old’s grandmother obtained a court order requiring Wayne to submit to a DNA test.

According to the legal papers, obtained by TMZ, Weezy was supposed to get tested before September 10, 2010 … but since he was behind bars at the time he got the letter (dated August 20), the judge pushed the deadline to December 9.

The woman going after Wayne doesn’t explain why her daughter isn’t pursuing the test herself — in fact, the birth mother’s name isn’t even listed on the documents.

Ladies, we beg you: keep your womb away from Weezy-Wee’s wee wee!