A cross between a hard-on and heartache. Primarily sadness accompanied by arousal.
Dude, thinking about that breakup sex fills me with hardache.
by Not Pratty January 14, 2009
2. A hard-on that is maintained for so long that it causes discomfort.
Heartless has a hella hardache because he cannot ever get with the ladies.
by Not Alamelie January 16, 2009