Friends' six main characters are all distinctive, memorable, and downright iconic in their own ways, but none has had their sanity more frequently questioned than Ross.
While Phoebe may be endearingly quirky, Joey is charmingly silly, and Monica absurdly obsessive-compulsive, Ross' behaviour became markedly more erratic, amusing, and at times concerning across the show's 10 seasons.
But just how well do you remember Ross' most off-the-wall moments and behaviours? From his explosive jealously to his regressive attitudes on gender roles, and his generally attention-seeking antics, Ross has certainly been responsible for some of the show's most unforgettable asides.
Yet to ace this quiz you'll need a sharp memory for Ross' most deranged quips and acts, the answers to some of which aren't as obvious as they might at first seem.
And so, you'd be smart to double-check all your answers before moving on, because there's a few sneaky red herrings in the mix to try and throw you off.
But fear not no matter how you do, as the answers are at the end as ever. Good luck!