A pimple that breaks out around the mouth as in indication of being in love or someone being in love with you. These usually appear suddenly after romantic occurances.
I kissed my crush last night and now I've got a love pimple on my lip.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.