Lyric discussion by Majnun 

Cover art for Hay Loft lyrics by Mother Mother

Great song.

Here is my theory. There are two young people making love in a hayloft. One of the lovers' Dad (it never says which one, this is left to the listener to decide) has a gun. This point cannot be over emphasized. The father puts on his long johns with the intention of shooting 'the hay loft deed head's straight off.' I think by this it is meant the person sleeping with his child.

It can be inferred that it is very cold out because the narrator often stutters, but this might not be necessary to understanding the song.

Small point, but it's more than likely the girl's dad, seeing as the girls sing it in the song, and father's are always protective of their daughters.