To be hammered, but more Sam-like. Usually people with the name Sam are more prone to becoming sammered, but it's quickly becoming very popular for anyone, regardless of their name to become sammered.
For a man's use on friends girlfriends mostly and your friends of the female gender. Tom and Bob are friends and Bob says to Tom's Girlfriend every time he comes over, "Hey Melissa make me a sammidge!"
when a girl gets caught red handed being shady (lying, cheating, etc.) yet, in the face of overwhelming evidence, still denies everything making herself look even worse.
Jack: "did you hear about Jessica and Tim?"
Roy: "no, what happened?"
Jack: "she totally sammi-sweethearted him"
Roy: "oh yeah?"
Jack: "yeah man, he caught her sexting her ex-boyfriend but she still tried to deny any wrongdoing."
Roy: "haha, nice"