Two days ago I was getting changed and I was scared to look down, all of the sudden it's like my female chest disappeared for a split second and it was a flat male chest. Well, not visually but it didn't feel like there was anything there if i didn't touch it, it just felt flat, and it was great. Has anyone else had this happen to them? It only lasted for a few minutes. I actually wish it didn't happen.. now it's just confusing me again.

Though for me it's more rare than a downstairs phantom.  I do noticed that a chest phantom does sort of happen with me while I'm working out and aside from Norma Sitz I feel like I have some of the largest jigglypuffs in the world.  I know they rank at either a D or DD with saggy breasts with stretch marks. I'm to afraid to measure.  Combine that with me feeling like one of the fattest people in the world at about 250 pounds.  While working out I notice that not only my chest feels more male but my stomach feels more male contoured and I feel like I can actually see where my abs would be so I just feel like a husky MMA fighter.  It's even gotten to a point where I haven't been wearing a bra lately and when I work out I do it shirtless with no bra and I have a mirror right in front of me  I don't know if that's coming from working out on UFC Personal Trainer or if it's just me being delusional.  Either way it does make me feel kind of better about myself.

Not FtM, but answering.

I get the same thing on occasion.  It's pretty rare, but it does occur.  I've had it where I've just kind of thought I had a flat chest and then I do something or the chest bumps something and I'm like, "where they hell did these come from?"  It's really rare though because the things are DDs so I'm usually aware of the weight.   I feel the phantom bits downstairs along with the feeling of a flat chest are misinterpretations I've mind since I feel as if I should have a flat chest and man bits below OR no bits at all (depends on my mood/what I'm feeling). 

It drives me a little crazy sometimes because if I'm really tired, I get a bit hopeful and then I look down and it's just a bit of a shock.