Was once used in russian puppet-show of Gaffi Gaf created by two or more guys. Show teaches to use swear words and other funny staff. The phrase was used after the presentation devoted to creating the rap music. Reflects mixed attitude to someone- on the one hand- positive, on the other-onanist. From russian- drochit.
-Now know how to become the rapper!
-Wow, the rappers are such drachipets!