Um, flowin' like my pad is the maxiest
Tyler is flowing, on his pad of paper, when he writes lyrics. He flows profusely, as though he was writing on an absorbent “pad”, like a Maxi Pad.
Of course Maxi Pads are meant to absorb blood, and this jibes with the overall theme (the lyrics his pad absorbs are violent) and the previous line, which imagines a picnic basket full of sandwiches and ketchup, looking like the blood of an accident.
Some people prefer tampons to pads:
To help improve the meaning of these lyrics, visit "Oldie" by Odd Future (Ft. Domo Genesis, Earl Sweatshirt, Frank Ocean, Hodgy Beats, Jasper Dolphin, Left Brain, Mike G, Taco & Tyler The Creator) Lyrics and leave a comment on the lyrics box