scam pump

A phrase used to describe the attempt of certain people (called "scam pumpers") to convince somebody, by promising enormous growth rates, to buy a particular crypto-currency. The beneficiary of this attempt, if successful, is the scam pumper himself.

"Hey John, come and join our telegram group "cryptopirates2k18" to recevie secret investment advice on cryptos."
"Nah, thx bro. I bet that is one of those many scam pump groups"