Honeymoon

[marval]

Mr Sine and Miss Cosine get married and head for their honeymoon to a seaside destination.

So they are chilling by the beach, and sipping on their drinks, and things get naughty.

During a lovemaking session on the beach, Sine whispers into Cosine's ear.

"It's a good thing I am not on top, or we would both be tanned".

[Rosie29]

It's a long while ago but I think I get it :-)

[198kHz]

Shouldn't that joke come with a Trig warning?

[jesmond]

Put the letter "y" on the end of Sine and you have a very unusual surname of a friend of mine, just saying

[Ellipsis]

What acute joke.