A kiss of true love.
Not an "oh it's time to take a picture -- let's fake romance!" kiss or an overly dramatic kiss that there is no reason for.
A woodchip kiss is rare (it often occurs only once in a lifetime). But it can often make a lifetime. It can often make life worth living.
Sexual maneuver in which the male quickly and forcefully thrusts his erect member in and out of his partner's throat, causing the partner to projectile vomit while making a rapid-fire gagging noise, the scene akin to feeding logs into a running wood chipper.