(UK, US, Canada, Australia, New Zealand, idiomatic, vulgar, colloquial, dismissal) Go away!

(UK, slang, vulgar, literally) To wet oneself. / (UK, slang, vulgar, figuratively) To be very scared (to the extent that one might lose control of one's bladder).

(UK, Ireland, Australia, New Zealand, vulgar, slang) A party where people consume alcohol.

To tease, ridicule or mock (someone). / To subject those present to teasing, ridicule or mockery, or to show contempt. / To be outrageously unreasonable.

(vulgar, Britain, New Zealand, Australian slang) Something easy to achieve.

(slang, simile) Drunk to the point of incapacity; inebriated.

(simile, slang, vulgar) Very drunk.

(vulgar, idiomatic, derogatory) To complain, especially needlessly and loudly.

(chiefly Britain) a drunkard / (chiefly Britain) someone who pretends to be knowledgeable on some subject

Alternative form of pisspot: a chamber pot.