Jake Paul wants in on the Will Smith vs. Chris Rock feud -- the YouTuber-turned-fighter is offering both actors $15 MILLION to take their beef to the boxing ring!! Shortly after the slap heard around the world went down at the Oscars, "Impractical Jokers" star Sal Vulcano joked about how much the Most Valuable Promotions founder would cough up to get both legends in the ring for an epic event for the ages. The 25-year-old fighter -- who previously offered Pete Davidson and Kanye West $30 milli each to face off in the ring -- delivered on his new proposition late Sunday night ... claiming he already has $30 million ... (full story)