Melting Pearls
It is the process of ejaculation onto your own stomach. The resulting mess resembles a pearl melting.
I may be a little late for the party, I'm busy melting pearls at the moment.
Melted Pearls
Termed after the look sperm has as it looses it's familiar "pearl" look and begins to liquify.
As he cam, he gave her a pearl necklace, but noticed soon it became melted pearls on her warm skin.
melting pearls on my tummy
Spanking the monkey. Masturbation.
"Well, I'll be upstairs melting pearls on my tummy if you need me." Roger on American Dad
Melting pearls on my tummy
How ejaculate might look on one's stomach after masturbating.
American Dad - Season 7 Episode 9 Rodger says "I'll just be upstairs melting pearls on my tummy if you need me."