"Balls To The Wall" - for ones balls to get busted. A male can have his balls in a vice, clenched in his boss' fist, or in his wife's mouth. But nothing really compares to getting your balls mashed up against a cold hard wall. A phrase most commonly referred to whilst at work or when communicating with the female variety.
1) "Man, my boss has had my BTTW all day at work... this is bull-shit"... 2) "Sup niggapotomous?! So my wife is gettin' all up in my grill cos I'm out gettin' shit-faced wit my bruz and she wants me to get back to the crib n pick out doilies for the wedding - BTTW..."