Idioms 27:

1- make one's blood boil
to make you extremely angry:
• When I think about what she said to me, it still makes my blood boil.

2- pat on the back/shoulder
to praise someone or feel pleased with yourself for doing something well:
• She should pat herself on the back and take a well-earned break

3- let's your hair down:
INFORMAL to enjoy yourself and start to relax, especially after working very hard:
• Playing softball is just a good way to let your hair down and have fun.

4- way above my head:
much better than me
•it goes above my head

5- have a sweet tooth
to like things that taste like sugar:
• Danny's always had a sweet tooth.