For patients who've just been stabbed with a hypodermic:

"I've got you under my skin..."

Then there's the classic "Found a peanut." Among the umpteen kazillion verses, you find:

"It was rotten (x3) just now...
"Ate it anyhow (x3) just now ...
"'Pendicitis (x3) just now...
"Operation (x3) just now...
"Died anyway (x3) just now... (etc.)

Genie