I don't think the words of the baptizer determine whether or not it is a "valid" baptism, but rather the intention of the heart of the baptizee. Obviously, if it's something really wacky I suppose the baptizee (upon understanding, perhaps years later, the bad choice of words) would feel uncomfortable about it and perhaps later seek another, more Biblical baptism. I think the point is that a person should earnestly seek to know and obey what God desires of them, whether it's baptism or anything else.As for what words are Biblical, the main thing many insist upon is the use of the words "the name of the Father, the Son, and the Holy Ghost" (some minor variations), referring to a "Trinitarian" baptism. Certain Pentecostals (notably, the United Pentecostal Church) don't believe in the Trinity, instead they believe Jesus-only, and baptise "in Jesus' name" only, which, though strictly speaking is Biblical (that baptismal phraseology can be found, i.e. Acts 2:38 if I recall correctly), is a perversion and rejection of Jesus' direct and clear commandMatthew 2819 "Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit,The Oneness contention is that "Jesus" is the name of all three but this assertion is readily cast into serious doubt by many Scriptures, such as only the Father knowing "the time" and not even the Son knowing it; Jesus' having a different, although submitted, will than the Father in Gethsemane, etc... Also, this would be an odd place for Jesus to be so vague in His commands, particularly one so important.