Person2: ya sure, (person 1 hands person 2 the icecream)
person2: o shit this is really slippery
person1: thats what she said...
what person 1 is refering to is a girl that would say that during sex...hes pretending that when he was having sex a girl said, that his penis is slippery...
this can be used in anything...
"That's what she said."
"Make sure it's long enough."
"That's what she said!"
"It hurts a little but it's not too bad."
"THAT'S WHAT SHE SAID!!"
"John, we're concerned about your drinking."
"THAT'S WHAT SHE SAID.... Oh."
billy: arrrgh its so hard
Johnny: Thats what she said
Example 2: Joe and Trenton were eating ice cream.
Joe: mmmmm this tastes sooo good
Trenton: Thats what she said
Example 3: Jack and Nick Were at a party last night.
Jack: last night was the best, it was so fun.
Nick: thats what she said
Example 4: Adam and Tyler were waiting in a line that was hardly moving at all.
Adam: Thats what she said