When one person goes in for an aggressive kiss and the other goes in for a passionate, gentle kiss. This results in their faces slamming together in unintentional violence.
Occasionally, the two grunt in pain, or in other words growl as a polar bear would.
"My first kiss was a totalmess. 100% polar bear kiss. I thought he loved me, but instead he rammed in face into mine."
When you pour out a popsicle (otter pop works the best) into a condom and freeze it. After it is well frozen, remove the condom and fuck a someone with it. After it is all melted, you lick it all out.