I do it all the time. Lay on your back and tuck the front in. Turn over onto your stomach and tuck the back in.
Always wait until you're alone with a 15 year old girl in a hotel to lay down on the bed and vigorously tuck your shirt in whilst maintaining eye contact.Who doesn't lay down on a bed to tuck their shirt in? If there is an easier way I have never been shown it.
Tuck or tug