About time this word has been incorporated into the lexicon. They’ve been around for over twenty years. Alleycats have been recently been popularized with cycle couriers since at least the early to mid-90s. They gained in popularity with non-messengers due to the participation of the international community of bike messengers, especially around 2000, when the Cycle Messenger World Championships was held in Philadelphia. A five-day warm-up event called Metropoloco was held in NYC to “hype up” the main race of that summer in the week prior to CMWC 2000, which consisted of racing, drinking, carousing and other side events including the bunny-hop, sprints, and skids, (track bike required, at least for a long skid worth recording). Lately, larger alleycat post-race games included footdown and bike polo.