"sakazuki wo hosu" to kaite! “杯を乾す”と書いて！ Write [it] as "to dry [one's] sake cup"!
sakazuki - a rather flat cup traditionally used to drink sake, also seen in some anime like One Piece in ceremonies to become sworn brothers and the like.
"kanpai" to yomu! “乾杯”と読む！ Read [it] as "kanpai"!
Sentences such as the above are about how a word, like 乾杯, is written with the same kanji as a sentence that defines the word, like 杯を乾す.
