A shirt in which the sleeves are too big for the individual wearing the shirt and cover the elbows - a synonym to 'shants' (shorts/pants). The word 'slong' is a conjunction of the words short and long hence slong: not to be confused with a large penis-sleeved shirt, though hilarious. Slong-sleeved shirts are usually worn by the over 40, which is generally excusable, but under this age, slong-sleeved shirts are not acceptable. Not to be confused with three-quarter shirts.

A casual invitation / threat used by an individual that is not afraid of fucking someone up.