Titballing

When you do a doggystyle and the man's saggy balls hits against the woman's saggy tits

They were doing a doggystyle and ended up titballing

Effervescent dusting

When she is so big you can't find the hole and have to throw effervescent dust to check where it foams to aim

I met a big girl last night. I didn't know where the hole was so did some effervescent dusting to look for the foaming to know where to aim

Tipping the log

When you decide to do anal and she has a poo inside. You then enter her ass and the tip of your penis touches the poo

Dude, last night I was tipping the log