The comedian sarcastically praised new Prime Minister Liz Truss.
Emily Thornberry condemned the MPs as 'so irresponsible' as she said 'so many rules don't seem to apply in Parliament'.
'Now is not the time for finger pointing,' foreign secretary Dominic Raab said.
Last month, Mr Corbyn led Labour to its worst election defeat since 1935.
Sir Keir Starmer is the only male in the contest.
Jess Phillips is one of six MPs hoping to take over from Jeremy Corbyn.
Rosie Duffield says she is being bombarded with messages.
Corbyn ally Rebecca Long-Bailey is currently the bookies' favourite.
The Labour leader is a lifelong opponent of nuclear weapons.
The Islington South MP responded that she would campaign to remain even if a deal with Brussels was done.
The Labour Party would work around Donald Trump if they were in power, the shadow Foreign Secretary Emily Thornberry has said.