Lit is a slur used to describe Lithuanians in a derogatory way. Shortening of "Lithuanian"
The word Lit is a racial slur that has been used historically to degrade and dehumanize lithuanians. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to lithuanians. If you are unsure about whether or not it is appropriate to use the word Lit, it is best to err on the side of caution and avoid using it in any situation.