Slang for "explode" or "(has) exploded". This is more dramatic than "explode", and it usually implies a comic value. Originated on Homestarruner.com in the Strong Bad Zone or possibly on Neopets.
To splooge ( the act of cumming) on her muffin (a womens vagina that is not shavin therefore knowing as a bush or her muffin).
Damn bro last night I made the biggest splooge-a-muffin on your moms cooter; it was intense!
My girl asked that I pull out cause she has an ob/gyn appt tommorrow so I gave her a splooge-a-muffin instead.
Wow! After I was done giving my girl a splooge-a-muffin it looked like spider-man had just shot his web on her crotch; it was so cool I had to take a picture.