Dr Squad

A patient was in the hospital recovering from surgery when a nurse asks him how he is feeling.
“I’m OK but I didn't like the four-letter-word that doctor sqad used in surgery,” he answered.
“What did he say,” asked the nurse.
“I’m OK but I didn't like the four-letter-word that doctor sqad used in surgery,” he answered.
“What did he say,” asked the nurse.
Spoiler: