не задумываясь(+ gerund; сделал что-либо: example provided by ART Vancouver • When Andy Higgins visited the aboriginal landmark during his trip to Australia's spiritual heartland last year, he didn't think anything of picking up a small chunk of the sacred rock to take home as a souvenir. Little did he know what landslide of unfortunate events that would unleash... – не задумываясь положил в карман)