Meaning: To give or provide happiness and/or excitement; to brighten someone’s day.
Situation: Tom was sick and feeling down until his friend Roger sent him a funny text message…
Tom texts Roger: “Thanks for the message. It really made my day!”
Note: when using this idiom, you must remember to place a possessive noun or pronoun before the word “day” (for example: hisday,herday, Jane’sday).