With Shock and Consternation

"Charity, Hope, what are you doing in my BED:" The two of them snicker in a most un-sisterly way. "And more to the point NAKED?" You finish.

"Justin, you are cunning and clever, yet at the same time stupid. What do you think we are doing here?" Charity says ruining her lightly calloused hands over your cock and balls.

"Whoa there, wait a second!" You say pulling her hands off and scuttling up near the headboard so you can see both of your: 'sisters' will have to do for now, at the same time. "We are SIBLINGS:" you begin, trying to make sense of this development, "why are you two trying to have sex with me right now?"

"It is CUSTOMARY for the leader of the colony to sleep with nubile guard's women when he is not sick." Hope says with a dark fire playing in her eyes.

"And sire children on them so the colony may expand." Charity Elaborates, crawling up to you slowly in the special wiggling crawl of trained military personnel.