09/29/2015 02:24 pm ET

Lawrence O'Donnell Mocks Donald Trump's Return To Fox: 'He Is The Worst Boycotter'

The candidate turned his back on the network for less than a week.

MSNBC's Lawrence O'Donnell thinks Donald Trump is pretty lousy at boycotting.

"If you're mad at some business or organization and you want to run a boycott, do not involve Donald Trump," O'Donnell said Monday on "The Last Word." "He is the worst boycotter in the history of boycotts."

The businessman's boycott of Fox News, which he announced Wednesday via Twitter, didn't even last an entire week, O'Donnell pointed out. Trump is scheduled to return to Fox News on Tuesday night with an appearance on "The O'Reilly Factor."

The presidential candidate has had a rather rocky relationship with the media since announcing his campaign in June, repeatedly lashing out at journalists over Twitter and in interviews.

Watch the clip from MSNBC's "The Last Word" above.