An Angus McWhirter is
(a) a regular on 70s children's tv show, along side host Roy Castle and twin brother, Norris.
(b) rhyming slang meaning, making a woman squirt whilst in the throws of anal sex.
Blimey, I rogered the missus so hard up the log flume she did an Angus
Angus McWhirter
Medical condition defined by the dire need to urinate shortly after the rapid consumption of 7-7.5 pints of alcoholic beverage.
Symptoms include: slurring of speach, swelling of the lower abdomen leading to acute pain in said area. And occasionally in cronic cases, vomiting on footwear
Budge out mate, the octopissy's kicking in. Where's the small room?