Any national flag that displays a smaller flag of that nation's current or former colonizer/conqueror. Typically seen in the flags of former British colonies.

The word first appeared up in 4chan's /int/ board, and was coined by posters making fun of the British Union Jacks found in the flags of Australia and New Zealand
1. "At least my flag doesn't have a cuckstamp," said the Canadian, as he opened another bottle of maple syrup.
2. Have you been to Hong Kong lately? Lot's protesters waving cuckstamps in the streets.
by El Hopaness Romtic September 16, 2019
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Any national flag that displays a smaller flag of that nation's current or former colonizer/conqueror. Typically seen in the flags of former British colonies.

The word first appeared up in 4chan's /int/ board, and was coined by posters making fun of the British Union Jacks found in the flags of Australia and New Zealand
1. "At least my flag doesn't have a cuckstamp," said the Canadian, as he opened another bottle of maple syrup.
2. Have you been to Hong Kong lately? Lot's protesters waving cuckstamps in the streets.
by El Hopaness Romtic September 16, 2019
Get the Cuckstamp mug.
Any national flag that displays a smaller flag of that nation's current or former colonizer/conqueror. Typically seen in the flags of former British colonies.

The word first appeared up in 4chan's /int/ board, and was coined by posters making fun of the British Union Jacks found in the flags of Australia and New Zealand
1. "At least my flag doesn't have a cuckstamp," said the Canadian, as he opened another bottle of maple syrup.
2. Have you been to Hong Kong lately? Lot's protesters waving cuckstamps in the streets.
by El Hopaness Romtic September 16, 2019
Get the Cuckstamp mug.