Haven't seen this one yet: in her hand...
One night, an ex and I were sharing a hotel room with two other couples: we were in one bed, another couple in the other, and one more on the floor. The other two couples were sleeping (yeah, right), so we were being quiet (yeah, right). We were on our sides in the spoon position - didn't want to get up and go through the awkwardness of putting the condom on and risk waking anyone up, so when I was ready, she put her hand down and caught every drop in her hand, then rubbed it all over her chest.
Still gets me hot just thinking about it...