I DON'T KNOW WHAT YOU'RE TALKING ABOUT
私のナットをなめる~
私 = watashi, while technically gender-neutral, is usually only used by females.
ナット = "natto" doesn't really translate this way, it doesn't really mean "balls" in Japanese.
なめる = nameru (lick), this is the "infinitive form", which basically means you're saying that your nuts are licked.
僕の金玉なめてRevised version. まほ~