When your palm itches it usually signifies that you will be receiving money in the near future.
Right=Cash
Left=Loss of Money

When your right palm itches, do not scratch your hand for the "luck" will go away. But if your left itches, then scratch away to ward off the loss.

It also means you'll get laid by the ugliest chick and regret it the next day

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

The condition of being so intensely irritated by someone that you want to slap them, and thus relieve the itchiness of your palms.