One of the most persistent stories over the years is about Spike Milligan's T-shirt with Arabic lettering. Supposedly it was discovered that the Arabic lettering translated to "hashish" only after the show was aired. This was untrue. Milligan's T-shirt actually says "Kuwait", a reference to his own television series Q5 (1969), which had been renamed in various versions over the years to "Q8" in one of its incarnations. Kuwait = Q8.
During a sketch in which he makes fun of British behavior, Spike Milligan jokes that this means he'll never get a knighthood now. In real life, Milligan did go on to receive an honorary knighthood in 2000 (honorary because he was not officially a British citizen).
This show was not available to watch in European countries with the rest of The Muppet Show when the series was uploaded to Disney+ on February 19, 2021. In the US, however, it was included in the package.