I got 20 on the motherfuckin' internet

from Lil B – Real 100 Lyrics on Rap Genius

Meaning

Lil B became famous by making Myspace Music pages and creative Youtube videos, many of which eventually went viral.
Lil B comes back to multiples of 10 in his work a lot this way-you’ll hear him say shit like “30 on my dick” all the time watching based freestyles on Youtube. Sometimes it means something in context, but usually it’s just Lil B using the fact that big numbers sound impressive.

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