happy as a pig in muck

(as) happy as a pig in muck

Very joyful and contented. Primarily heard in UK. Look at your sister out there on the field! She's happy as a pig in muck now that she's back in the team's starting lineup again. I know I'll be as happy as a pig in muck once I get this stupid cast off my leg.
See also: happy, muck, pig
Farlex Dictionary of Idioms.

happy as a pig in muck

BRITISH, INFORMAL
If you are happy as a pig in muck, you are very happy. From day one I adored it. I was as happy as a pig in muck. Note: This expression has several variations. For example, some people talk about being happy as a pig in shit. I'd much rather be as I am, I couldn't imagine being any different. Happy as a pig in shit. Frankly, I was like a pig in shit — oh, how I revelled in the opportunity of standing next to famous people!
See also: happy, muck, pig
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • (as) happy as a pig in muck
  • muck
  • slop
  • (as) happy as a pig in slop
  • (as) happy as a pig in mud
  • clam
  • happy as a clam
  • happy as the day is long/as a clam/as Larry
  • Larry
  • (as) happy as a clam
References in periodicals archive
So when in the 1990s I was assigned to write an eating-out column, I was happy as a pig in muck.
When it was my turn to eat on our national carrier
Being able to combine his two passions for farming and presenting seems to be making him happy as a pig in muck
JLS star gets all the chicks; JB swaps glitz and glamour for a quieter life as a farmer; EXCLUSIVE
"After winning the Munster U21 Championship I believe he was rolling around on the ground, happy as a pig in muck," said Quirke.
We'll make Evans keep his kit on! GAA
Mae 'na ddywediadau eraill sy'n ddigon tebyg wrth gwrs: "mor hapus hwch mewn haidd", ac yn Saesneg "as happy as a pig in muck", neu mor ddoeth thylluan.
Gwell troi'r cloc ym mis Chwefror; LLxN Y LLYSIAU
I'd been happy as a pig in muck all morning so come on, I said, make a coffee and take a deep breath - it'll get better, the doctor isn't daft.
Can you help me solve this smelly mystery? MAUREEN SPRING ON MONDAY
"I put on my wellies and my dungarees and I literally am as happy as a pig in muck.
Mucking in with the babes; The glamorous new face joining Denise Van Outen has no fears about bringing home the bacon. Olivia Convey reports
it's quite w e." Being able to combine his two passions for farming and presenting seems to be making him happy as a pig in muck
JLS s all th star gets e chicks; JB swaps glitz and glamour for a quieter life as a farmer
PRINCE William was as happy as a pig in muck yesterday as he tended his father's prized Tamworth porkers.
Prince Swills