At the times ot Soviet Union, there was a youth pioneer organization (Молодежная пионерская организация). Its members were called pioneers (пионеры), it's something like scouts in the US. Pioneers had a special greeting, it is called "fiery pioneering greeting". (пламенное пионерское приветствие). You can see it on this video:

http://www.youtube.com/watch?v=6EYapgjn9j4

It is just a rhyme, the fiery answer is compared with a "pioneer's hello". It doesn't mean anything special, just a salutation from pioneer. 

You can see пионерский привет or пионерский салют here: https://ru.wikipedia.org/wiki/%CF%E8%EE%ED%E5%F0%F1%EA%E8%E9_%F1%E0%EB%FE%F2  

/or/: http://yandex.ru/images/search?text=%D0%BF%D0%B8%D0%BE%D0%BD%D0%B5%D1%80%D1%81%D0%BA%D0%B8%D0%B9%20%D0%BF%D1%80%D0%B8%D0%B2%D0%B5%D1%82&stype=image&lr=54&noreask=1&source=wiz&uinfo=sw-1440-sh-900-ww-1419-wh-743-pd-1-wp-16x10_1440x900

We often say in Russian: Передаю тебе горячий привет.  Передаю тебе пламенный привет. 

How fasinating it is to read this? I can identify words , by virtue of ''spelling'' them, based on sound. But no idea what they mean:p