Guinness World Records (GWR) is celebrating its 70th anniversary by highlighting unclaimed titles you might fancy going for.

The bookkeeper of weird and wacky achievements - the first volume of which was published on 27 August 1955 - is inviting people to try their hand at such extraordinary feats as:

• The most whoopee cushions sat on in one minute;

• The fastest time to blow a stamp 10 metres;

• The furthest distance bottle flip;

• The most high-fives in 30 seconds;

• The fastest 400-metre sack race;

• And the fastest time to ascend the height of Everest by bicycle.

GWR's editor-in-chief Craig Glenday said the records are "there for the taking", and looks forward to celebrating "the next generation of record-breakers".

But it's not just quirky milestones that GWR concerns itself

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