”salty leave” refers to tears or a tearful goodbye. caleb is talking about a girl who left him. the descriptive parts: her “hour glass body”, that she “has problems drinking milk and being school tardy” and that she’ll “borrow your toothbrush” and “bartend your party” - all refer to the girl’s quirks and the things that he misses - hence, the “kill~ me”. the “she saw my comb-over” part refers to how she knew of his “flaws” or insecurities and presumably, was still okay with them. the ending of the lyrics: “said he’s on his own but his own is you” - i think is caleb referring to himself in the third person. he said he’s on his own but for him to really be him he needs her.
”salty leave” refers to tears or a tearful goodbye. caleb is talking about a girl who left him. the descriptive parts: her “hour glass body”, that she “has problems drinking milk and being school tardy” and that she’ll “borrow your toothbrush” and “bartend your party” - all refer to the girl’s quirks and the things that he misses - hence, the “kill~ me”. the “she saw my comb-over” part refers to how she knew of his “flaws” or insecurities and presumably, was still okay with them. the ending of the lyrics: “said he’s on his own but his own is you” - i think is caleb referring to himself in the third person. he said he’s on his own but for him to really be him he needs her.