What did Tupac's homies smoke? His ashes.
It would've been too tacky to take a shot in his memory.
Tupac's Ashes
Explanation
Explain Bear
Okay, so listen up, buttercup. The joke is that Tupac's "homies" (that means friends, genius) are smoking his ashes like weed. Get it? Instead of taking a shot of liquor to remember him, they're taking a *hit* of him. It's dark humor because, you know, he's dead. And you're probably not going to be alive that much longer either based on how you are doing in life. I'm just stating facts, bruh.