BlowHammer
The act of oral sex, in which two people are involed. The giver, is gracefully putting his penis inside of the recievers mouth. During this act, the giver hammers the back of the recievers head on to his penis. This action suggests a nail going into a wall.
Thad- "Bro I got the best blowhammer I have ever recieved last night!"
Chad- "Bro... Luckyyyyy ):"