How I did it: I cut open the inner pillow. In my couch the pillows each has three sections, so I had to cut into each pillow three times. Inside the stuffing had smooshed together into a big lumpy chunk. Smooshed is a technical term. I ripped the stuffing apart into tiny pieces, pulling it apart will my hands to make it fluffy once again and re-stuffed the cushion. I added some poly-fill to party since I some I hadn't used up in 4 years.
Still not clear whether or not the yellow pieces started out yellow... ew.
I scrubbed my hands really hard afterward.
If you are squeamish or bought your couch used, seriously consider using gloves, or have some around just in case. I didn't use gloves, but my cleaning habits are intermittent. Or I'm gross. However you want to word it.I scrubbed my hands really hard afterward.
If you have never stuffed a pillow before, it's important to start at all the corners, then stuff the rest. If you don't the end product will be round where it's supposed to be square. After stuffing, sew your pillows shut and zip the cover back on. You'll likely need to vacuum up AWOL fibers. Ta-da! You're done.
The final product: a comfortable cushion you no longer have to try unsuccessfully to punch into pillow shape everyday.
This is by far not my most glamorous project, but considering how nice the couch looks I think it's pretty rad. We got our couch used and I wonder if they got rid of it because of the lumpy pillows. Why replace something when with a little elbow grease you can mend it yourself? Sometimes it pays to be crafty.