RED BLOODED MALE

I am a most red-blooded male;
I get like dog wagging its tail
When I see near-naked females
On beaches, be it Spain or Wales,
Disporting in their bikinis,
Short step from showing all there is,
But I must maintain modesty
While I ooze sexuality,
Using the sea to keep things cool
And bring some patience to one's tool.
Would they see what they do to me
If trunks did not fit spaciously?
Would I look a promise - or threat -
As I came out of the surf, wet:
Get invitations "to my place",
Or a straightforward slap in face?