Trolling the nets I found some choice phrases in Afrikaans. Be warned, this gets vulgar fast.
1. Jou ma is so besig om te naai, jy's uit haar gat gebore. Your mother engages in such copious amounts of intercourse that it necessitated your being born out of her anus, as her vagina was otherwise occupied.
2. Afrikaners call English-descent South Africans soutpiel, which translates to saltcock, implying they have one leg in South Africa, one leg in England, and their dicks are dangling in the ocean.
3. Piele vleg = braiding penises, meaning to engage in male bonding.
4. Jou mammie naai vir bakstene om jou sissie se hoerhuis te bou. Your mother shags for bricks to build your sister's whorehouse.
5. Hy sal die kak uit jou maag gesteel. He'd steal the shit from your stomach, meaning he's untrustworthy.
Via reddit. Probably my favorite out of them all is referring to Afrikaans as Loldutch.