boff vs bunch of fives

boff

• A hit or smack. 

• A great success; a hit. 

• A pupil who works hard; a swot. 

• A line in a film etc that elicits such a laugh. 

• A big laugh. 

• to have sexual intercourse (with someone) 

• To hit; to strike. 

bunch of fives

• a punch (blow with a fist) 

• a fist