Lad
Definition 1 of 3
Pro Tip 1/3
Young Male
Use 'lad' for males, typically under 30. Don't use for older men. The lads were playing football in the park.
Pro Tip 2/3
Friendliness
'Lad' suggests friendliness and informality, often used among friends. Come on, lad, let's get you home.
Pro Tip 3/3
British
Most common in British English, less used in American English where 'guy' might be used. He's the funniest lad in our class.