FTX founder Sam Bankman Fried (SBF) has been given some free advice on surviving federal prison from former white collar criminal Martin Shkreli, known also as “Pharma Bro.” Shkreli, who spent around four years behind bars for securities fraud between 2018 and 2022, told the currently-on-bail former FTX executive that he should consider shaving his head, deepening his voice and skill himself up on gang culture and rap music. The former prison inmate was speaking on a Dec. 23 episode of the crypto podcast Unchained, where he suggested that SBF needed to rebrand himself for jail, as being a rich …