A pillow partition is a section of pillows placed between two bedmates, who are not lovers, to avoid any accidental touching while asleep. The bedmates using a pillow partition are typically heterosexual males, who are forced to sleep in the same bed on a trip for logistical reasons. If one male is straight, and the other's sexuality can be considered a bit ambiguous, the pillow partition is a necessity. It can also be used to save face to any other males on the trip who might joke about the two bedmates sleeping together.
Example 1: "Yikes, I asked for a room with two beds, not one big bed. Luckily, they gave us enough pillows for a pillow partition."

Example 2:
Person 1 - "Damn, yall slept together in the same bed? Yall must be gay."
Person 2 - "Nah man, it's cool. We had a pillow partition, so nothing touched."

Example 3:
Person 1 - "It sucks that you're going to have to share a bed with Pat. I'm not really sure, but I think he may swing both ways."
Person 2 - "Yeah, I'm going to be enforcing a strict pillow partition rule."
by theboycalledhim November 8, 2011
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A pillow partition is a set of pillows or large body pillow initially placed between a male, usually claimed to be just a friend and female sleeping in the same bed who are not lovers publicly and have no other option for sleeping arrangements. The main purpose is to give the female who may have a boyfriend or may not want the outside world to know of her whorish ways a solid excuse to avoid judgment from her keeping of additional bedfellows and/or negative reaction from significant other.
Example 1:

Girl - "My boyfriend is going to kill me if he finds out we only had one bed in this room."
Boy - "It's ok, I can whip up a pillow partition for you to take a picture of in case he gets upset. We can get rid of it after the picture."

Example 2:

Boy - "I thought you said we could at least cuddle?"
Girl - "That was until you surprise attacked me with a spontaneous erection."
Boy - "I'm not sure that was so spontaneous, we should be safe and put up a pillow partition tonight."

Example 3:
Girl - "I swear I never sleep in the same bed with boys unless I'm dating them. We must use a pillow partition tonight."
Boy - "That is what most whores say."
by 1526rd November 9, 2011
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