Euphemism for "I give a fantastic blowjob".
In BBC's TV miniseries Sherlock, John Watson, (boyfriend to Sherlock Holmes) is discussing his various talents which include physical and mental flexiblilty, parenthetically adding at the very end of a long list "I learned the clarinet at school."
by dappertophatter November 03, 2012
The term "learned the clarinet at school" is most commonly used by persons as a way of conveying the fact that they have been known to give fantastic oral sex, particularly on male genitalia.
"I learned the clarinet at school." John said, sending a wink in the direction of his room-mate.
by Calliope987 November 03, 2012