Not everybody was hatin' on Taylor Swift's celeb-crammed 25TH b-day bash in NYC -- a toy company just made a crap ton of money off it thanks to Justin Timberlake. Turns out the takeaway from Taylor's now famous IG shot -- with Beyonce, Jay Z, Sam Smith, Haim, and JT -- was the poop emoji mask on Justin. The people who make JT's turd face, BigMouth Inc., say they've seen a huge spike in sales since Taylor posted the shot.