A Manchester City supporter scratched the belly of a fellow fan who was shirtless in the stands during Saturday’s 3-2 FA Cup win at Swansea City.

For reasons best known to himself, the man reaches out and rubs his fingertips on the stomach of a fan without a shirt on in the row behind.

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It’s possible to speculate that Man City’s comeback from 2-0 down to win 3-2 coincided with the young man baring his torso, in which case the scratch was for good luck.

City’s quest for the quadruple looked to lie in tatters when first-half goals from Matt Grimes and Bersant Celina got Graham Potter’s Swans off to a flyer.

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Bernardo Silva pulled one back on 69 minutes, with Kristoffer Nordfeldt’s own-goal levelling proceedings soon after.

Sergio Agüero’s late strike, his 28th of the season in all competitions, sealed City’s passage through to the semi-finals.