joka leikkiin ryhtyy, se leikin kestäköön

Finnish

Proverb

joka leikkiin ryhtyy, se leikin kestäköön (literally, “who begins the (children's) game better endure it”)

1. if you get involved in something, you better stand it; in for a penny, in for a pound, if you can't stand the heat, get out of the kitchen