make (someone's) head spin
to make someone confused or overwhelmed, to make someone dizzy
The information that I had to learn in the accounting course made my head spin.
Rules to play Petanque
Both teams select their boules. Each teams boules should have Groove Patterns that distinguish them from the other sides boules that way, they will be easy to identify when counting up points. When playing Singles or Doubles, each player uses three boules and for Triples each player uses two.