"I better get to the head, I think I'm spotting!"
There maybe other definitions to this way of smoking it, but this is the name used in New Zealand.
Me: Oh true did you have some spots?
Bob : Hells yeah they fully fu*ked me up!
2.) noun: the apparent pre-cum that leaks through your khakis, during foreplay, before you take them off
"Umm...wanna go spotting for deer?"