I've got a number of blues songs that mention "John the Conqueroo". For years i wondered, who is John the Conqueroo? Now i know.

P.S. Nowadays, "I can make love to you, woman, in five minutes time" isn't something you'd want to brag about.

perhaps he is referring to his ability to get a woman from a non-sexual state to a sexual one in five minutes. such as, five minutes after meeting or greeting a woman, he has charmed her into his bed.