An individual who clam jams, in other words an individual who prevents a female from getting some hot action whether intentionally or unintentionally. A clam jam is a common maneuver in the lesbian community, but can also be applied when a girl is trying to hook up with a guy. While clam jamming is an effective form of birth control it is frowned upon in most societies.
wendy: Dang i was totally gonna get some last night till that kid's friend ended up being a stupid clam jammer.
a no jammer is when someone in the fandom of bts (named ARMY) are cringy, annoying, or unrealistic. the term "no jammer" comes from a video with the group's leader telling jimin, out of context, "you got no jams", which became a known joke. this group also includes koreaboos
normal ARMY: did you see that photo of jimin?
no jammer: omg yes!! it was so hot i want him to date me 😍 ugh i wish i was korean!