In n out

When giving head to a man and receiving head from a woman at the same time both dudes blow simultaneously giving the illusion that his load is going in n out.

Did you hear Tom and John did an in n out with Sally?

In n out blumpkin

Sitting on the toilet sucking a dude off, whilst being sucked by a woman and both guys bust simultaneously making it seem as if the guy standings load went in n out.

We were so fucked last night. that in n out blumpkin will be one for the books.