Hi, everyone! Please, check my suggestions. I used Past Simple and special phrases.
1. When I was 18 years old, my friends and I often goofed around.
2. We went for a walk in the city centre and asked each other: How about dropping over to dinner?
3. Yesterday, my friend met a man for a one-night stand.
4. Do you remember that you pigged out on sushi at the party last Saturday?
5. I hung out in a club with my classmates at the weekend.
6. Last year, that festival was sick!
7. 5 years ago, when we celebrated our graduation, all the people were plastered.
8. No, you're wrong. I was not merry yesterday.
9. What did you get up to <s>do something</s> after Mary's birthday yesterday?