“This is my jam”, “that’s my jam” or “my jam”, is a phrase people use when hearing a song they really like.
ORIGIN
Not much is know on the origin of this saying but is believed to have started in the late 70s early 80s. Even thought it was once only used for music, it is now acceptable to be used for anything one really enjoys, as seen in the beginning of the Key and Peele episode.
SPREAD
The phrase has been used in many movies, TV and songs over the years and is popular to use on Vine. Some other shows include The Regular Show, Key and Peele and The Lego Movie.
VARIATIONS
There is also another variation where people use the term literally. Like comedian Bo Burnham.
