The obtrusive strand of hair which emerges from a females chin. Wirey in nature, thick and often frowned upon. Most commonly used by wives to rub on the skin of their husbands. The spike is often placed in a cut for the pleasure of pain when one is alone.
Husband: "Ouch, stop rubbing your spikes on my chest!"
to spike is to hit a high point, like the spike on an earthquake seismograph it stands out (up) against the general ups and downs of the daily grind. To peak, reach a peak.
When you're banging a chick an slip out, then "accidentally" slip it in her ass while re-inserting!
That crazy bitch was was goin so buck-wild, she almost broke my dick! So I retaliated by spiking her!!!! OR.... Sorrybabe, didn't mean to spike ya, but I got carried away!!!!