Bojango sisters 

The relationship held by two girls that have slept with the same guy

Sarah and Marie found out they both slept with Josh, making them bojango sisters.

Bojango sisters by LJS313 August 31, 2009

bajango sisters 

2 or more women that have had sex with the same dude. thus making them "bajango sisters"

Amanda and Ashley became bajango sisters after they both had sex with the same ex-boyfriend.

bajango sisters by RHaRHoNSKSVPCS December 8, 2009