It's taken blood - just ask the West Ham supporter walking around with one finger fewer than the rest of us after inadvertently ripping off his digit on the away section's surrounding fence while celebrating Said Benrahma's goal in Genk.
Sweat - the team's performance to secure their first win in a European tie that wasn't a qualifier since 1999 in Zagreb was breathlessly brilliant. Tears - of laughter when Declan Rice serenaded the squad with a rendition of 'Rice, Rice Baby', his own version of the Vanilla Ice hit, in Vienna.