Racetrack chips stuck?

so this weekend, i grabbed a couple roulette chips at the local track thinking i'd use them later on. had them deep in my jeans pocket and now they're jammed together and won't separate for the life of me. feels like they're fused or something. tried just twisting them but it's not doing anything except hurting my fingers.

never had this happen with chips from the casino floor, so i'm not sure if the racetrack chips are different or what. has anyone else had issues with racetrack chips sticking together like this? i'm guessing it might be some weird grime or just bad molding. figured i’d ask here before i risk snapping them or get strange looks at the cage.