A Rotten Swahili is when you go down on a nersy chick and based on the smell an/or foreign pubic hair in her vaginal region you can extrapolate that she is in fact a mudshark.
swah-hee-lee-an bak-slap When receiving oral while standing, right before ejaculating, the person receiving oral defecates on their hand, and proceeds to slap it on the back of the person who is giving the oral.
Lilly: "So like omg, i was giving head to Billy and right before he came he took a shit in his hand and slapped it on my back!"
Leah: "LMAO he so gave you a swahilian backslap!"
A girl who is beautiful and appears shy to those that she likes. She attracts shy guys as well, who awkwardly try and talk to her but can't completely tell her how they feel. Instead, the guy tries to write UrbanDictionarydefinitions in the hopes that she may see it and know who wrote it and how they actually feel.
A language spoken in many parts of East Africa, including Tanzania, Kenya, Uganda and others. It is a mixture of the native Bantu language and Arabic. Swahili is written in a Roman script (i.e. like English).