Constipated toast
It is an insult and/or a joke. It also goes along well with the word bird.
person: Hey, nerd.
you: shut the fuck up you constipated toast.
person: the' fuck did you say to me?
you: thats right you fucking bird!
(silence)
you: shut the fuck up you constipated toast.
person: the' fuck did you say to me?
you: thats right you fucking bird!
(silence)