Answer:
An oxymoron is a figure of speech that puts two opposite or contesting words or ideas next to each other.
Many oxymorons are used regularly when we talk to others. For example, jumbo shrimp and bittersweet are oxymorons.
The picture above is an oxymoron because the man appears to be on a vacation, as he is at the beach and barefoot. However, he is also working on his computer at the same time. This is an oxymoron because vacation is meant to be a relaxing break from work.
Therefore, the oxymoron is working vacation.