squeesome

–adjective
1. causing or liable to cause a girl to squee
2. delightful or pleasing.

–noun
3. multiple girls squeeing, forming a group, a variation of threesome.
4. activity in which multiple girls participate, similar to a slumber party.

boy: what do you think of my new puppy?
girl: oh its totally squeesome!

boy 1: oh man, did you see all the fangirls freaking out over justin bieber?
boy 2: yeah, it was a total squeesome.