Sitting courtside Knicks and Nets give me high fives
Nigga I be Spiked out, I can trip a referee
from Jay-Z (Ft. Alicia Keys) – Empire State of Mind Lyrics on Rap Genius
Meaning
Jay-Z co-owns the Brooklyn Nets, and Spike Lee is the quintessential court-side sitter at Knicks games, a callback to Jay-Z’s verse on Cam'ron’s “Welcome to New York City”: “Next to Spike as you pan left to right” (as if by a TV camera)
By “Spiked out”, Jay-Z means “sitting courtside, wearing a silly outfit and hussing/fussing”

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