Definition of keep it up:
"The new teacher was so enthusiastic, I hope she can keep it up until the end of the year."
"
Ever hear of Viagra? It's not my fault you can't keep it up anymore."
Definition of keep it up:
"The new teacher was so enthusiastic, I hope she can keep it up until the end of the year."
"
Ever hear of Viagra? It's not my fault you can't keep it up anymore."