When an individual or group of people intentionally show up, uninvited, to the same restaurant/location as another (unknowing) group or individual with the intention to piss off the unknowing group by (hopefully) sitting directly next to them.
Steve and Jenna made a reservation at Dee's restaurant for a nice romantic evening. Steve mentioned this to his friend Bobby casually during the day. Bobby decided it would be funny to get a group of friends together and also dine at Dee's restaurant that night. Bobby's group of 6 arrived before Steve and Jenna and were seated. When steve and Jenna walked in, they were surprised (and a little pissed off) to see the uninvited guests snickering at them as they were seated close by. Steve and Jenna got Dinnerbombed!
by THE Dinnerbomber January 15, 2012
The big stink pickle you feel brewing after a large dinner.
I'll have to talk later guys, I'm off for a dinner bomb...
by Scinon March 04, 2015