Slovakia, 1959. The likely lads. I read somewhere that the term 'likely lads' can refer to those who get up to well-meaning mischief. Perfect for this trio.
(Although the location of this photo is not specified in Fortepan, it is part of the same collection of photos taken in 1959 in and round Fiľakovo in south-central Slovakia, near the Hungarian border. So I am going with that!)
Source: Fortepan [53834] / Zsolt Zsanda / Károly Vajszada