What are oxymorons

One interesting word in English. OXYMORON

What is an oxymoron?
An Oxymoron is defined as a phrase in which two words of opposite meanings are brought together….
Here are some funny oxymorons:
1)  Clearly Misunderstood

2)  Exact Estimate

3)  Small Crowd

4)  Act Naturally

5)  Found Missing

6)  Fully Empty

7)  Pretty Ugly

8)  Seriously Funny

9)  Only Choice

10)  Original Copies

11)  Open Secret

12) Tragic Comedy

13) Foolish Wisdom

14) Liquid Gas
Mother of all Oxymorons is-
15) “Happily Married”.?