The former Tonight Show
host tagging in for Fallon seems to be an annual recurrence
. Last October, Leno did the same thing after Fallon claimed he "pulled a hammy" during a joke. "I don't think I can continue," the host said at the time. "But of course, here at The Tonight Show
, the monologue has to go on. So, I think I'm gonna have to sub out. Can someone tag in for me please?"