American: I am out of the office between 10 p.m. and 4 a.m., I am so, so sorry.
European: I am out of the office from 10 a.m. to 4 p.m. (for tapas).
American: I am in the bathroom, and will respond to your email from the toilet.
European: I am taking my government-mandated eight-week summer vacation and will reply when the autumnal Mediterranean breeze kisses my cheeks.
American: I am out of the office for the next thirty minutes at a biopsy, but because I live in constant fear of unemployment I have pre-scheduled thirty-seven emails and Slack messages so that my boss thinks I am at my desk.
European: Désolé! Taking a mental-health year.
American: I will be slow to respond to your email, as I was suspended without pay for opening an unsolicited email promotion for CBD oil.