Sexual intercourse engaged in to
make up for having missed opportunities for sex. The missed sex could be due to your partner traveling, or being too busy, or having a fight. This is different than
make-up sex. With make-up sex there is
one sex act which accomplishes the goal. With catch-up sex you have to compensate for all the sex you missed having.
Example:
Wife: That was
really good sex.
Husband: Yes, but we'll need to do it again in 2 hours.
Wife: Why on earth?
Husband. We were mad at each other for a week. We would have had sex 5 times in that week. We have four more to go.
Wife: Oh yeah, catch-up sex.
Joe: Hey want to go to the
driving range tomorrow?
John: No, I can't. I have to stay home with my wife all weekend.
Joe: Honey-do list?
John: Sort of. I was
out of town for two weeks straight, tomorrow is dedicated to catch-up sex. I have to honey-do her a lot.