UFC featherweight champion Max Holloway taunted prospective opponent Conor McGregor over a recent advertising campaign.
Holloway and McGregor, who is set to be stripped of the lightweight crown having failed to make a single defence since winning it in November 2016, have traded social media barbs in the past.
The latest exchange was sparked by a Twitter post from McGregor regarding his new deal with Burger King, in which he referred to himself as the "Undisputed Champ Champ" and a chicken sandwich as the "Undisputed Spicy Champ."
The New Zealander responded on Twitter: "You went from King of Ireland to King of 'chicken'? Looking forward to the two strips meal coming April 7.
"PS Shout out to the real fighting Irish. The ones who value whats in heart before whats on waist. Hawaii respects you and welcomes you with open arms."
In 2013, McGregor recorded a decision win over Holloway, who is unbeaten since.