Remember when Morgan Freeman revealed what he sounded like ‘on helium’ and everybody loved it? Well he’s at it again, folks.

This time the silver-tongued actor showed off his helium-induced vocals on The Tonight Show with Jimmy Fallon, where he was promoting his science show Through The Wormhole – which started all of this off in the first place.

But while he did play along – with Fallon also joining in – we can’t help thinking he wasn’t impressed by the stunt. Perhaps this particular facial expression was a giveaway:

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Oh dear, Morgan Freeman doesn’t look too keen to reprise the helium stunt (Picture: NBC/YouTube)

Nonetheless he played along, even when Fallon cracked a joke about the 77-year-old owning a sailboat – during which he referred to him as ‘Captain Morgan’.

Although judging by his reaction that particular one-liner went down more like a lead balloon than a helium balloon:

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Don’t worry Morgan, we would have rolled our eyes too (Picture: NBC/YouTube)

Still, the whole thing was worth it just for another chance to hear Freeman sounding a bit like Donald Duck, as he told the host: ‘I really shouldn’t be doing this.’

Meanwhile, here’s the original clip, just to refresh your collective memories: