Ass coming in from Uganda (3)

I believe the answer is:

mug

I'm a little stuck... Click here to teach me more about this clue!

'ass' is the definition.
The answer and definition can be both body parts as well as being singular nouns.
Maybe there's an association between them I don't understand?

'in from uganda' is the wordplay.
'in' indicates a hidden word.
'MUG' is hidden within 'from uganda'.

'coming' is the link.

Can you help me to learn more?

(Other definitions for mug that I've seen before include "Drinking vessel; rob" , "One easily duped" , "A drinking vesel or a slangy victim" , "Fall guy" , "Drinking vessel; dupe" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.