Ejaculation of semen that gets in contact with water, making it very sticky and hard to get rid of. Most of the time it occurs in the shower when one ejaculates and tries to wash it off with water, but instead makes it 10x worse and harder to wash off. This is known as one of satans dirtiest tricks.
dude dont try and rinse off your skeet in the shower it will just turn into satans silly string.
I was finishing myself off in the shower cause my brother was gonna take one and as i was walking out i ended up with satans silly string all over my body.
I heard neill jacks off in the shower.
man, he must deal with satans silly string alot.