Jimmy Fallon April 10, 2018 7:01 am ‘Tonight': Co-Host Cardi B Tells Jokes In Jimmy Fallon's Monologue Cardi B steps in as Jimmy Fallon’s co-host and kicks off the job by adding her twist to his monologue from Monday, April 9. US & World Videos 0:48 Target to lower prices on about 5,000 basic goods 0:47 WATCH: Comet fragment lights up the sky in Portugal 1:43 World reacts to death of Iran's president 1:58 ICC seeking arrest warrants for Israeli and Hamas leaders 1:07 Cargo ship that crashed into Baltimore bridge moving back to port