Definitions by Mothafuckin retard

Harden the fuck up 

Get tougher psychically or/and mentally. Get stronger.

- Its raining outside man. We can't do our cardio.
- OH YEAH BABY! Bring it ON! We gon train in the rain! Momma ain't raised no bitch! Harden the fuck up!

Harden the fuck up by Mothafuckin retard March 5, 2018