You, good sir, are a bad bad cockend.
3) Knobhead
(сленг) = dickhead – болван, дубина, ослина, идиот, болван, ебанько.You fucking knob-head! Why did you do that?!,
Bellend = cockend = knobhead = dickhead
4) Son of a bitch
(n) – ублюдок, сволочь, сукин сын.Don't you come back, son of a bitch.
Mildly offensive insults