A random varient of the Your Mom dis. Don't actually use it in a real fight since you'll most likely get your sorry ass laughed at. Use it more with sarcasm or jokes around friends.
1. Some person: You dumb shit
You: Your mom in a box
2. Some person: What the hell do you want?
You: Your mom in a box
When a female with a boyfriend or husband or any significant other chooses another man outright without any second thoughts. Cheating without the need to creep.
Damn my nigga your bitch is choosing, i seen her with that other nigga kissing and shit.