2. The beige soup (mix of water, faeces, urine and possibly vomit) left in the toilet bowl afterwards can also be referred to as squiddlepiss itself.
3. Squiddlepiss can also be used in the same way as 'clusterfuck' or 'pigs ear'. To mean a mess that got out of control.
"Arrrrrrgh there's shit and piss on the underside of this window sill, someones squiddlepissed around here"
"So after I slept with her, i did her sister and then her mum, it was becoming a right squiddlepiss so I became gay"
"Oh dear, what did you do to my nicely organised toolbox? You've made a right squiddlepiss here"