Studs

Why is it that guys who sleep around are studs and girls who sleep around are sluts?

Take those football boots off, now, otherwise the studs will ruin the parquet flooring!

But seated in an easy-chair by the fire was a tall man, carefully dressed, with diamond studs in his shirt, and a toilette which, though subdued in tone as a gentleman's evening dress must be, was yet too elaborate for the occasion.

He wore his studs to play soccer.

Many US states have outlawed studs due to the damage they cause to paved roads.