JIMMY IN A JAM!

Failing Fallon on firing line as he's branded more toxic than Ellen

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TROUBLED Tonight Show host Jimmy Fallon is being rocked by accusations he’s a behind-the-scenes bullyboy whose booze-fueled behavior makes him even more toxic than dethroned daytime Queen of Mean Ellen DeGeneres!

Sources snitch the flailing funnyman is fighting to keep his $16 million-a-year gig and avoid being canceled in the court of public opinion — and in real life — as his image takes a beating despite a groveling apology.

Recently, 16 current and former Tonight Show staffers claimed the Saturday Night Live alum’s boozy mood swings led to mass employee defections, forced emotionally battered assistants to seek therapy and even triggered suicidal thoughts among some shell-shocked staffers!

Moles blab the bad news couldn’t come at a worse time for the TV star, who continues to languish in third place in late-night viewership behind FOX’s top-rated Greg Gutfeld and CBS mainstay Stephen Colbert.